I think it would work, or at the very least it wouldn't break the game in any way from my view of things. However, I believe it would have to be restricted to self-cast only. It's still going to be on the healer to raise fallen comrades. I'm used to it now, but it is quite a bit of pressure in 4-man content to make sure you don't die since more likely than not, if you fall, so does the group. Heavy are the hands that hold the heals.