You make no sense. They had no reason to nerf ANY class bar BH in anyway. It’s a non competitive co-op game. The only class in need of balance was the BH because he has the best boss removal in the game by far but any complaint about any class should be directed at wizards atm.
Sienna is the single top damage dealer now BH is nerfed (normally top damage due to ammo busting a boss) because health on kill negates her entire cooldown/vent for damage mechanic, more so than ranged having near endless ammo but actively having to deal with shields and armour, neither of which bother the wizard or dwarf.
Basically my point is that unless something breaks the game like BH did, theres no reason to nerf it. It’s not a competitive game in the slightest due to a lack of Vs mode and players chief complaints tend to be “I dont like people playing how they want”, which is obscenely toxic to a community and limits the games appeal.