Yeah Allen is filling up. 330 or so D3 coaches now, a bunch of people moved up to D2, and D1 got a dozen vets back into the game who 'retired' in seasons 20-30.
As a Allen guy, hopefully this keeps the world full(ish) for a while. I still think that a full world isn't the most fun, but about 80% is kind of the magic best number, since the sims can take all the worst teams and let the humans do a little better than a totally full world.