DAST vs WHM. The playstyle is extremely similar and most skills DAST has are just slightly modified versions of WHM skills. The biggest difference between them is healing power and AST has been power creeping...

It's time to define a unique end-game role for WHM.

I think 1 skill modification could do this (athough I'd like to see changes to other skills as well but back to the point):
What if WHM could remove weakness via Esuna?

AST has a chance of offsetting weakness already, or just boosting party DPS is weakness isn't present; whereas, WHM would have no impact if weakness wasn't present, but could guarantee weakness had a minimal impact if present.

Thoughts?