Looks great! Morph-Cut will have it's uses. The colour stuff is incredible though - can't wait to test it out properly.
I'm a huge fan of Videvo! I use it all the time for client projects, it's a really cool resource :)
I'd say the obvious one for me is more more more - the more clips the better! But judging by your growth rate that's definitely one of your priorities. I think the lightleaks and overlays idea is very good - a lot of premium solutions to this out at the moment, so if you could produce a quality free solution - this would go down very well with the low-budget community!
I'd like to see a better user profile for people who upload, but that's just for vanity really.. Keep up the good work!