Shin F.
Smash Master
The bones don't have to be bound to anything, so that's actually entirely possible, assuming they don't exceed the file size limit. In fact, as I've said, I'm fairly sure it's been done before on the vault.Even if it's not, I just thought of something. What if they added the bones to all of the costumes, but it only actually had a model on it in the scarf and cape alts? Like, the palette swaps would just be invisible where the cape should appear.