Not a big fan of it for every mob/npc/player that does some AoE move. I think there are places where it could add to the mechanics of a battle, like the one in 1.0 where you had to avoid being hit from an Imperial Juggernaut AoE that had a target on the ground that flashed red. But, in general I just think it removes a lot of the challenge and learning process of mob AI. Instead of learning particular mob mechanics and anticipating moves, players just need to "avoid red circles on the ground at all times!"

Though, we don't know much about it so I'll reserve my final judgement until I see it in action.