Bless could work like magice missle i think someone made a staff that heals AoE targets in the same way.
About AoE UI yeah it's annoying when target are shown as effected but then they are not.
Targeting circles are badly made no way around it and if they highlight the spell should work simple as that OR you are better of without highlights altogether.
UI circles in general mediocre still time to impove those at least.
No clue why the whole circles under the enemies don't glow up. Same could be used when we leave reach and trigger AoO.
Bodies can cover those circles so it's not clear at all times.
Clarity is one of the most important aspect of any user interface. To be effective, people must be able to recognise it.
