Bangaa Bishop
Probably not very useful but in the inverted gravity area of the ice area (heading back from sector zero), a well placed shinespark can help you get out of the area faster without having to jump on all the platforms.
All the 2D games had plenty of this, they just didn't make it so blatantly obvious.
Quote:
I hate how the Speed Booster got the shaft in this game with all the low walls they added into otherwise straight tunnels just so the Speed Booster couldn't be used unless they wanted it to be.