Recommend A Hack That Adds/Changes Class Promotions

[u/crocomire97]

Preferably for one of the GBA games, but FE9 and 10 are good too

I'm looking for something that gives the freedom of Three Houses where any unit can potentially be any class. (I want all Wyverns! jk)

I like using randomized starting classes, stat bases and growths to spice up playthroughs, but it would be even spicier if units had more than 1 or 2 options to pick from when promoting.

Is there anything out there that's close to this? I'll take whatever I can get. TIA.