Should there be a toggle allowing the cast of Rescue on someone?

[Komarimono]

And yet, people still screw it up, which is a valid place for Rescue to be used that can't be covered with more healing.

That's when you simply let then die. If they can't avoid the mechanics of the encounter, how can they contribute properly? Using Rescue won't help them most times anyway due to the lag it has, I've seen healers try and use it on encounters again and again, not realizing the person is already dead and they are just going to yank a corpse due to the odd delay it has.