I've had this discussion before, and the best solution to this problem is to simply allow people to opt out of Rescue working on them. Make it a toggle that's on by default, and put a little debuff next to the players Party frame so Healers know he can't be Rescued. World of Warcraft already does this, because they understand how much players despise intrusive abilities like that.

I agree that Rescue is primarily a troll button, and in my experience does way more harm than good. I would turn it off IMMEDIATELY if I had the option, but I understand some people use it in their statics to cheese mechanics or optimize, so just let people who don't want it used on them opt out of it.