More nooby S_SKIN option requests:
Bounce/Body Slam ability. Multiability allows you to do it repeatedly. Action Speed affects how fast you fall, while Jump Height affects how high you bounce back up (1.25 times your Jump Height on first bounce, 1.5 times your Jump Height on further bounces). This ability is also affected by gravity. Also have the option to have Special Ability Frames are used on the way down, while Spin Frames (Spring Frames if NOJUMPSPIN is on) after you bounce, or to use Spin Frames all the time.
SA flight as either a seperate ability, or the result of Fly/Swim with Homing on.
Option to place another ability for the Spin button while in the air. This way Sonic can have the Bounce Attack in SA Mode, plus any characters based of Sonic Heroes can have both of their air attacks. This may not be a good idea though, as it would cause problems when you have an Armageddon/Whirlwind Sheild, or when you have Fly/Swim or Swim as your character's ability (pressing Spin makes you fall faster, you won't be able to do that if you add another ability to it). The seperate ability can also have it's own Action Speed and duration.