Maybe if anyone could see there targets anymore this would be valid but right now all you see is a big blur of explosions and random sparkles up to 10 feet away from targets, by the way since when was trying to find the arse of a slime ball fun, its like trying to find the back side of a bouncy ball that instantly turns very quickly. Another example is the backside of a tentacle, visually there is no obvious way to find it and add in some sparkles and you may as well be playing pin the tail on the pony.
Aside from that all monsters in this game defy physics and the speed of light and instantly turn and face you. This mechanic is broken and these ability's are the only subscribers left. If you want a disadvantage fine iam sure you can think of something to make it harder for you, the rest of the game wants to move on.