[quote name='Jimbo Slice']I don't know how perfect of a marketing opportunity it is, considering that MvC3 is coming out in March or April of 2011 and the Avengers movie comes out in May of 2012.
Maybe as DLC down the line, but even Thor doesn't look like the movie version, it's the current comic-book design. MvC hasn't previously, and continues not to be based on the Marvel movies, but rather the comic books.[/QUOTE]
Well, there were a ton of X-Men characters in MvC2 and that was right before the first X-Men movie came out. It's not like people won't be playing MvC3 in 12 months after it's release either. People are still playing MvC2 now and it's been 10 years.
I don't necessarily think it's an essential tie in though, but when Marvel is mulling over what characters they'd want to include those that will be in upcoming movies probably have some sort of priority. If not from a strictly marketing standpoint, but the fact that these characters will be more in the public eye than others so people will just want to play as them. If Thor and say Gambit are up for debate on who to include, Thor is going to win every time. His movie btw is coming out May 2011, so maybe a more appropriate tie-in, and maybe we'll see Avenger cameos in that one too.