I was (am?) very fond of mid-high level Nurse Maya in Borderlands 2 but since my damage healed my crew it justified spamming high area-of-effect damage into the fray, so she was healing and crowd control.
In fact, the Bonus Package grenade mod was so effective they had to change the rules so that grenade damage couldn’t heal. Curiouslyn they buffed the rest of Maya’s skill tree to add balance.