Reformulated classes sounds like more than added options- is reformulated different from rebuilt?You miss my point.
I don't want a new game. I want to play 5E with added options.
All those publishers that create new books that replace the 5E PHB/DMG/MM miss this point too.
You want someone to make a 5e-clone with classes done in a slightly different way.. this sounds exactly like Tales of the Valiant to me. They didn't make a new game when searching for a better 5e- they just made a slightly different 5e with redone classes.
The only way off the top of my head that A5e is "its own game, like PF2e vs PF1e," is that it uses Expertise dice instead of Expertise.