Healers are fine in group mitigation
Tanks do not need their current excessive mitigation kits, they already have agency to still survive busters, Healers should be given more agency over bad/lacking tanks in most forms of content, in harder content giving both healer and tanks some shared mitigation agency on said tank is something called teamwork.
Current tanks being mitigation bots is boring at this point, that's literally all they do I want tanks to actually do stuff that feel like they're protecting people not just being a boring mitigation bot.