I found this video recently regarding fanbases to crossover fighting games in general, and it's pretty spot on at rant videos I've seen regarding the games:
I doubt this will get any attention.
This topic has really interested me for a long time since the world of fan art. We all know that posting ecchi/hentai pics of underaged girls (ex: the Pokegirls) is labeled as child porn, even if they're harmless or made older, and anyone who gets a hand of it is taken to custody. There are even people who take this too far by reporting artists who posts pics of panty shots, when there's practically no harm in it. But doesn't this go against 1st Amendment rule in terms of Freedom of Expression.