there's also tanks that aren't aware that when they pull a group of mobs and they are only attacking one of multiple mobs the first cure, stone skin, or attack gets the hate on the rest of the mobs automatically. there's just as many horrible tanks as any other class in the game.

i do agree with what you are saying in wait until there's hate established as that should the norm, but it does work both ways and tanks need to play their role properly as well.