I like how the intro to each game features samus doing that quick turn-and-shoot move. It always uses whatever suit you had in your current save. I'm on MP2 now and it even added gravity boost and grapple once I obtained them and reloaded the game. It's a nice touch.
Quote from Melancholy Spork:
One big turn off for me, though, is the lack of game-specific titlescreens.
Disappointing. I was totally looking forward to starring at MP's title screen and listening to its music for a few minutes.