Change Game Speed
At the mainmode select menu hold the right shoulder button on the Classic Controller and push up or down on the DPad to change the game speed If you push down you should see 3 stars and the color of the Street Fighter II logo will change There are 3 speeds
Different Color Outfits
To get diffirent color outfits for the characters use different buttons to select them
Edit buttons right before a fight
To edit what button does what right before a fight simply hold select sometime before the versus screen appears and do whatever you would normally do until the edit screen appears This should work in any mode and in versus mode you can even select if either player should be CPU or human