TP: you are correct on both points, or at least I share your opinion. EFC has responded to the changing market, and is meeting demand. Def XC and ISC got there first, I suppose that has a lot to do with the different ways the organizations are structured.
The Lake Hills select program, I think, is the best example I've seen of a soccer environment that provides a challenging level of play to the multi-sport athletes. As said before, killer talent in that club...just that those guys are playing club baseball, or AAU/Select basketball, etc. I'm sure there are other just as good examples, LH is just the one I know.
Getting back to the "starting them early" part of this topic, as parents I think we monitor and guide our young athletes, but ultimately it has to be their own inner desire and ambition that determines how much training, what competitive level, etc. I have a DK in the younger set that is really into B'ball and Soccer, and has been with an RCL club for a few years now. He really wants to play AAU b'ball, and is good enough to do so. The rule around our house, though, is you cannot play RCL and AAU, as parents we can't conceive how there would be time to do that and maintain good grades and a little bit of a social life outside sports. So...compromise is he can choose Select soccer and AAU B'ball...but it is gonna' be his choice, not ours. Will be interesting to see what choices are made - but we know that if the choice isn't made this year (12 going on 13) that the window is closed for AAU. He just won't be able to catch up. We'll see, and I hope as parents we are making the right decisions.