Nerfing Ast isn't how you make the other healers better, this game is about Dps and speedruns, what healer brings dps buffs ?

It's called a meta, whm doesn't fit into it because it provides zero damage buffs or meaningful tools compared to Ast.

The pure healer in the game is healing LESS than the hybrid healers, that's the problem, BUFF the Whm potencies by like 200-300 and maybe it will be viable, even then maybe not.

Also don't forget stigma, even if they do get buffed they will still be rejected from raids as lolwhm, similar to loldrg in ffxi (which persisted for the entire games life of 10+ years).