Progress report: I figured out how to move SSS icons around. Not just the order (which is done with the Custom SSS code), but the actual icons.
(ignore the background, I'll use Brawl's background in the released version. But you can change it just by using a different MiscData[20])
As you can see, I accidentally rotated the 13th icon. Gonna have to fix that.
I'm also adding six SSE stages and three "custom" slots (the 0 slot will be filled with FD Melee when it comes out, but the 1 and 2 slots are for your use.)
EDIT: Just a note - this won't be released until the Project: M demo (but not very long after.) I'm going to use a couple of the P:M stages in the pack.