I was asked by a newer member of the Soccer Community in this state to post an explanation of what the soccer world was like before there was a PDL and it's successor, the RCL.
In the Old Days (About Five Years Ago), there was no PDL, no RCL, and USCS was just an outfit that made it easier to travel out of state (paperwork wise) to some tournaments. There was a State wide Premier league where position was based upon the merit of the team, not upon the name of the club. There were vibrant districts (seven of them) across the state that provided quality local play at various levels for select teams, most often with multiple divisions within an age group. There was even a league or two between Premier and Select that operated state wide to accomodate teams that wanted to play premier, were not able to qualify, and wanted the "strongest" possible play to prepare them to try to gain entry the following year. (Some say that teams who participated in these leagues were just trying to justify their existance and their fees, and could not bear to be a run of the mill select team in the normal district leagues, but I feel that the WSYDL teams who were doing it for those reasons were a minority, although they did exist).
How did one get into the Premier Leagues? At U-14, there was a grand qualifying tournament. Originally, it was unseeded, and everyone went to one location and played off. The top 8 teams were placed into Premier Division 1, and the second 8 teams were placed into the Second Premier Division. There was even a 3rd Premier division, where the next eight teams were placed. The rest were returned to select (District). At one point, if memory serves, there was more than 100 teams competing to qualify. Some teams that could have qualiied at P-2 or P-3 chose not to try, because they did not want the state wide travel, the expenses of premier, and did not subscribe to the "premier code" of trying to be the best possible soccer team, the most competitive they could possibly be, and to select players based upon that. A reasonable decision, and neither party missed the other.
The qualification tournament for Premier, called LPTs - League Placement Tournament - took place over one or two weekends, depending on the number of teams. A team with one loss could still qualify in the highest division.
After the U-14 year, The Premier leagues promoted the top two teams from the lower divisions and dropped down the bottom two from the higher division. Sometimes, depending upon the most recent rules changes, the two teams going up and the two teams going down engaged in a 4 team tournament, with the top two teams going (or staying) up, and the bottom two going (or staying) down.
The bottom two (and eventually 4) teams from Premier Division 3 (P-3) - were relegated out of Premier, and there was a tournament (called LPTs, too) where all the teams relegated out of Premier, and all the teams trying to gain access, played off against each other. The top 2 (eventually 4) went into P-3.
Originally, there was no U-13 premier. But the clamor to "go down" eventually won out, and there was a U-13 Premier League. However, the divisions were essentially un-seeded, (teams from the same club were placed in different divisions). And all applicants were accepted. On the boys side, there was normally 4 divisions, in theory equal. The placement of the teams did seem to be random at U-13.
Some people did not like this situation -
Issues -
1) U-13 Premier, being unseeded and untiered, did not benefit the best teams.
2) Teams from the King County area had to travel to Bellingham, to Vancouver, and horrors, to Eastern Washington, if they were placed into divisions that had those teams.
3) Teams from Eastern Washington normally had only one, sometimes none - other Eastern Washington teams in their divisions. That meant alot of travelling for them.
4) Teams from the Big Clubs were in danger of not qualifying for Premier at all in the LPTs. And yes, this did happen on rare occassion. On several occasions, teams from the Big Clubs failed to qualify as P-1 teams, which lead to mockery.
5) The expense of going to an LPT tournament for one, perhaps two weekends. (This has been shown to be a ludicrous arguement from the Big Clubs given the normal expenses and time committments they require.). Besides, it ignores the positive contributions that such a tournament can bring, and not just in team building.
6) There were only 3 divisions, which limited the number of slots available for clubs to have "Premier" (high status) teams in.
7) Some clubs engaged in a lot of chicanery at LPTs. Kids who were going to play up to U-15 were placed on the rosters of the U-14 teams for LPTs, players who definitely not going to be playing with a team in the fall (regular season) were on the LPT rosters, etc. etc. etc.

There were players who moved from one club to another after LPTs depending upon the placement of the various teams.
9) For a while, the best venues for large scale tournaments were in Eastern Washington (Specifically the Tri-Cities with its 12 field complex, and the Spokane Valley at Plantes Ferry). This meant that the U-14 and U-15 tournaments were normally held there, because they were the biggest, best soccer complexes available during the time frame of LPTs. The older ages seemed to be normally up at Bellingham. This irked many people, who feel most comfortable never leaving the Puget Sound Metro area (cue TP...)
10) This program showed no respect towards clubs who had a history of teams ending up at the higher levels of Premier when older, it was simply merit based at the time of occurance. (This arguement ignores the pattern of recruitment by bigger clubs. See the abuse of the ODP program before it was turned over to the Sounders).
11) A team at P-3, no matter how good it became, would have a two year climb to get to P-1 in the best case. This could hurt recruitment of other players, it could hurt the retention of the top players (they might leave to a P-1 team), and it hurt the vanity of the DoCs of Big Clubs whose A teams were at P-3 or lower.
12) The LPT tournaments did not insure that the BEST EIGHT TEAMS were in P-1 at U-14. This is valid, but also misleading. It took two losses to be knocked out of P-1 at U-14. Once a team lost a first game, they were placed in a loser's bracket. Teams that did well at U-13 Premier were seeded. So a second loss to a team would come against a team that had already lost a game. And with 100 (or whatever) teams competing, the chances of a situation where you are the fourth best team, beaten by one of the top 3 in your first game, and then facing the loser of the other top 3 having played against each other in your second game, is absolutely minsicule. Playing the lottery might give you better odds. And even in such a situation, you would still have the chance to qualify as P-3 or P-2, potentially.
13) With promotion and relegation, and new LPTs to enter P-3 every year, a team was only two years out of playing P-1 no matter where it finished.
14) No matter how well a team proved itself in State Cup play, it had no impact on where it was it placed in the Premier Leagues for the next year, or if it was placed at all. While I know of no situation where a non-premier team actually placed in the top 4 of the state championship cup, this is somewhat valid idea for improvement. There was a team that won the Champions League in Europe in the last decade that did not qualify (via domestic league placement) to defend their title. There is also the situation in England this year where a team won the FA Cup but was also relegated out of the Premiership.
15) As I recall, there was a situation where the top club in the state failed to have it's boys A team qualify for any of the 3 Premier divisions in the last decade. I may be wrong in the details, when I heard about it I did not investigate, just laughed. And there are occassions when a team gets a favorable draw, and other coaches are smarter than its coach. There was an instance where a 3Rivers girls team earned a P-1 placement via a favorable draw, and then lost every single game in P-1. It clearly did not belong, but a smart coach could have made sure that he did let his team get placed in over their head.
I am sure that there are many people who can chime in on the benefits and detriments of the old LPT system. I have been trying to keep my personal opinions out of it, and present the facts as I remember them. The advantages and detriments of the PDL/RCL is an entirely different subject. If anyone wants to add or correct, please feel free.