Trust me...this stuff had been done quite some time ago...I mean...they played a Snake vs. Mario match like 4 months ago if I remember correctly...I'm sure they're adding things still...but it's not like they don't seriously consider adding Sonic, online, whatever...these are things the developer himself wanted for Melee...just didn't have the time or resources.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )