Maybe there should be moderators for actor photos. People like to go and change an actors photo when they don't like the actor or feel like they're being fan casted too often. Take Dylan O'Brien's current photo for example.
I know there are a lot of actors on here. Too many to moderate most likely. So maybe a 2-3 day review period instead? So people can suggest a picture update and during that the 2-3 days someone can decide if the picture should be replaced or not.
Do you know how long it takes before we can change a photo? I keep being told that a photo has only recently been edited and to come back later.
As for the trolling, I agree, it's awful. I always try to pick flattering photos of the actors in question.