More than you probably want to know, but here is a sketchy explanation of LPT seeding. In each flight there are 16 teams (for example). The team placed in spot #1 finished FIRST in their U-13 state league. Let's say that is the Patriots. The #16 spot is usually a team that finished second in their U-13 state league. Let's say that's Marysville. If all went perfect, Marysville and Patriots will meet in the final game of the first weekend for a P1 spot. This is their reward for doing well in state league. If there are an uneven number of teams, a team that finished 1st place will get the bye.
Then teams that finished 3, 4, 5, 6 are put in other spots, for example in #4 or #12, so they will not face the 1st or second place U-13 teams until the next round of games.
Teams that finished below 6th and any non-state league team INCLUDING the PDL get spots such as #2 and #3 and #15. The idea, of course, is that these weaker teams will play the strongest teams early on and move into the losers bracket. Like Benchwarmer said, it's a pretty "loose" seeding set up.
So the PDL won't get seeding, but the state should do something for the PDL teams, not becuase of their club name but because it changes the system. For example, the #2 and #15 spot traditionally go to "weaker" or non-state league teams. Under the current system, Crossfire could get a "non-seeded" #2 spot and play #1 spot Patriots. This would most likely send Patriots to the losers bracket with no chance at P1 despite finishing first in U-13 league. The other version is that Crossfire loses and we send our Regional semi-finalists to a losers bracket, which contradicts the entire system.
I've read a number of resentful posters saying that the PDL doesn't deserve seeding, which I can understand, but not doing something can hurt other teams more than it will some of the top PDL teams. But I'm not sure what this will look like in the end. This next years LPTs could have more wrongly "placed" teams at the end because of the changes of the PDL, for both PDL and non-PDL clubs.