I have a NG+ category idea

Here's a run I did for an example.

NG+ play all story stages (windy hill zone 1~lava mountain zone 4) and you can have all levels unlocked so you don't have to grind animals.

and split the category into wing, and wingless (and maybe super sonic and no super sonic)

Timing starts when first stage's normal play is selected and ends upon clearing the last score screen.