They've nailed (more or less) the music and some small details at least (those rotating lifts that likely have a gameplay gimmick to them where you need to time yout jump so that you are on the right side).
Just hoping they'll have shoulder buttons, or whatever Wii controllers have, assigned to swap weapons easily on the go.
Was the yellow devil the annoying boss that spun around in a tornado and reformed himself on the other side of the screen?
Yes, but he was also a pretty INNOVATIVE boss for a game that came out around 1989 or something.
Also someone said that its a bald move to make mm9 into a low-tech game but I'd guess the production costs to make this game are really low and the time they need to make this won't be as long as some full 3D game with all the latest eyecandy and audio +Theres a big audience that just loves this game already.