While yea, it can be used as quite a effective trolling method, I still don't think Rescue should be removed outright.

There are plenty of people that are using the skill correctly, so getting rid of a skill because of a few morons I think is unnecessary. It's the fault of those using it incorrectly, not the skill itself that is the issue.

There are so many other ways people can troll and kill you, from the healer not healing you, to the tank shirking, just not pulling, or pulling out of Tank stance and just letting the mobs eat you when you eventually pulled hate again.

Report them, blacklist and move on.