I think it's pretty clear -- If you have Youth National Team aspirations- You need to play DA.
The chances of making a YNT are pretty slim. As stated above, there are probably a few hundred girls in each age group that can play at that level. Selecting the best 20-30 is not easy. Politics, luck, etc will have a lot to do with who gets picked.
No proof here, but here's a likely example:
2 players play the same position. Both are excellent players. 1 of them has been in the DA for 2 years. Her coach is a loyal US Soccer supporter. The other played ECNL last year and just joined the DA this year. Her coach is a known a-hole. And her club gives US Soccer a hard time all the time.
Who do you think they are going to select?
How is a kid from Valley Center whose family can't even afford team fees and expenses (all provided by a neighbor teammate's parents who paid for everything, including tournament travel) and who was the best youth GK I ever saw going to get a connection to DA? Further note - in HS his coach usually had him playing center mid.
DA has limited vision.