Footlocker is basically a race between a couple really good guys. Anyone who holds to the illusion of continued FL dominance is either crazy or blind. FL now is not the same race as it was pre-NXN. The talent splits between the two races and that's the way it'll probably continue to be. If the wannabees don't see it, the shoe companies certainly do. Isn't FL on it's 2nd sponsor after Nike left? I predict it'll be another year or two, and you'll see post-Nike sponsor #3.
A lot of the FL thing depends on the region. In our region, the South, the guys get maybe 1 really good runner like McGorty and a bunch of ultimately overrated good-but-not-greats who think they're amazing because they can run a 3 mile course and convince themselves it was a 5k. Any good HS kid with half a brain will jump on NXN if they think it's an easier road to qualifying for the National, and that appears to be the case with at least several of the top runners over the last several years.
In Regions like the Midwest, where you can qualify for both races, you see a number of HS kids do that - even though it's fairly clear you can't double back very well. If HS kids in the Midwest viewed FL as the greatest thing since sliced bread, then they'd bail on NXN and go after the FL berth.