Mechanic Concept: Time Machine

So recently with all of the reworks characters have been getting, I've realised that even if a character having a fresh moveset is good completely removing their old moveset is inherently a bad idea. So instead of completely removing old movesets for reworks, why not add an option where you could play with older versions of your style?

How this could work would be in the lobby there could be a scientist npc who when interacted with shows an interface with all previous movesets of your character. Of course all movesets would be balanced to the current balancing standards, so you can't just switch back to prime Yukimiya or NEL Isagi.

Let me know what you guys think of this concept, I think it'd prevent a lot of the downsides of reworking styles.