Guys, this is our final week of spectulation. I just wanted to say that it has been a massive honor to be part of this glorious thread. You guys have really made me laugh and smile. I want to thank you people for the great times I had here.
Personally, I think Ridley has a massive chance of getting in the game as a playable character (no pun intended). It has been recently showed that Ridley was grabbing Pikachu in the Pyrosphere for a long time without letting go, the shadow's size, when proportionized (right word?), is character-sized, and the teasing of Ridley for over a year makes me think he is definitely playable. The Pyrosphere would serve as an excellent home stage to Ridley (assuming "home stage" are the right words), at least in my opinion.
As for the Other M Ridley vs. Brawl Ridley, I really don't care. While I was here, the Other M design for Ridley really grew on me, and I really don't like one more than the other. Personally, I think a fusion (Fusion? I didn't mean to make that reference.) of the two would be a great design for Ridley.
I think Ridley would have a flight feature that works similar to Little Mac's KO Meter. When Ridley is standing on the ground, his meter would build up. When Ridley ends his jumps, he would hover in any direction, similar to Mewtwo's float in Project M, at least for a short time. As for Ridley's size, I think his body size would be just above Ganondorf's height, and his wings would make his total height slightly above Bowser's height. As for his tail, it would be pointing up, similar to Charizard's tail. I think he would make a great character in Smash. Hopefully he made the final cut.
Long live Ridley.