Been almost a week now since it came out here, and I've been playing it ever since. The game has it's plus and minuses, but over all I'm enjoying it (when I'm not cursing at people online).
Most depressing to me is the lack of Individual Character endings, as the game instead opts for a Mortal Kombat style story mode, which is mostly told through story boards with voice overs. There is also a major lack of single player modes and other such awesomeness that have been included in the series from the start.
Character creation is super baller though. Probably one of the best character creators in any video game, let alone a fighting game. And online works pretty nifty too with several different ways to set up fights. I'm a like too rage-y to play much more of it once I get the last online trophy, though.
Also, don't let the "Spider" bite you!