Given that Druid has a lot of spells that put down a hazard that can hurt people, it would be nice to see allied NPCs you don't control not bum rush into them to their deaths. Multiple times now I have had a druid in the Kagha fight ruin into a moonbeam and die, or sit next to a flaming sphere, or die in a thorn field. Most outrageously was I beat that hag after a long arduous battle, and Mayrina, that stupid idiot, promptly kills herself.
Doesn't even need to be ally NPC's. After killing the Gnolls with moonbeam my 3 other party members decide to promptly almost kill themselves on moonbeam while following me back to the cave to talk to Rukan.
Same principle applies to the explosive/poison plants in the Underdark, the pathing in this game is so awful.