I agree with OP and everyone else who has posted so far.

It would be nice if they made the target icons stand out more. As it is now it's just an airbrush lighting effect that looks a lot like the action and casting lighting effects.

It would also be nice if they made the name of the claimed target red in the target UI. As it is now it's red only on the mob it's self but white on UI. When claimed and unclaimed mobs of the same type are clustered together it's hard to see if your on the right mob.