Have all the Parts. (Who doesn't? =P)
Most of the gimmicks aren't gimmicky enough >_> like the ferris wheel and the environment blocks.
Anyways, I tend to make large stages and stages that are weird. Used to make symmetrical stages but they got tired >_>
Some of my faves (if only I could u/load some images...):
Tetris A (Large, Dome theme, music is... Tetris [either A or B, don't recall now]) - blocks arranged in tTetris pieces on the left, and the letters "tetris" on the right. A ladder divides the stage into two.
Safety? (Medium?, Cavern theme, forgot music) - Almost Sandbox stage, entrance in top left, exit in bottom right, otherwise enclosed. Angled blocks stop launches outside the box - you have to go into the entrance/exit areas to have a chance of KO. >_<
Some ramp stage I forgot its name >_> (Large, Dome theme, Waluigi Pinball music) - mainly designed for seeing Wario Bike with Wario-Man, a big stage with some hiding spots.
F.Destination? (Large? [may be medium], Cavern theme, Final Destination music) - a "clone" of Final Destination but with two thin platforms at the bottom of the stage, normally hidden from view. Those who camp on the thin platform are evil =P