The Art of Self-Sacrifice

How many times have you seen the Blaster snipe an enemy to pull him out of the mob only to have half the mob kick the Blaster's ass... all just because he was doing his job and pulling? There's sure an awful lot of variations on Taunt out there. I can understand... It's a useful power. But one of the variations I think would be most useful, particularly in situations like this, is "interposing" ...using your own body to protect an ally from incoming fire. But CoH doesn't really have this ability. Here's how I'd work it:
Interpose (a Presence pool power taking the place of "Challenge" and bumping "Provoke" to the lowest spot on the list): By selecting another hero (or perhaps only another team mate) and clicking this power, all enemies that that are currently targetting that hero are now targetting you. Dangerous, sure, but it pretty much defines the Tank's job in CoH. Making it a pool power also allows scrappers or any other hero of self-sacrificing bent to take the fire for others.

I really like how this sounds.