*warning* wordy ramblings to follow
I would say that Wincusto has probably seen the greatest amount of newly released themes over the last couple of months, with the one exception being customize.org. Customize was recieving a fair amount of previously released themes, people were catching up per say.
I don't think the "Litestep Community" (if there is such a thing...hmm...there is, I guess) will adopt a general skins site as there "main" place to gather themes from. A comment I hear often is this place or place isn't Litestep specific, so they'll wait till one pops up.
There are a couple of Litesteppers who are hosting themes on their own pages. DJCricket has themes (not just his own) on his site. Jemmaledin has several themes on his site designed to work with the new LSDistro (including a version of my Ivory for Litestep theme).
The "community" is still pretty young generally (in age and maturity)(although Jafo and I skew that average fairly severely) and they seem to want there own place to identify with. As an example, Jalist from LS2K tried to launch a LS screenshot + themes site a couple of weeks ago. I tried to create an account there the very day the site launched and there was already nearly 200 users already registered at the site. He had to take the site down within the day. Traffic was through the roof and he didn't have hosting that allowed for what he needed.
As for for me (and others obviously) Wincustomize had become home. It's a mature group that hangs here, the site is here for the long haul, and the admins are quite dedicated to Wincusto. We couldn't ask for more adn I'll continue to refer other Listeppers here as often as I can
*End* of endless ramblings...for now.