Over-healing should not generate extra threat

[Dale]

Then tell your tank to grab aggro better and don't put regen on a full HP tank. :/

I hate to say this, but this is one of the silliest things I have read on these forums in a while. Don't use a HoT on the tank when they have full HP? Did you just really say that?

I don't think you understand the concept of a healing over time spell. It is used to preempt damage. Not to mention it lingers after a fight is over and it's unreasonable in my opinion anyway to expect the tank to have to take the time to cancel all of his HoT effects before the pulls again.

If the spell doesn't restore any life then it shouldn't create any threat. Simple as that.