I have no problem at all with it if someone is dead on the other team. But I don't like that it will give the buff to whoever got the opponent lower, that isn't fair at all.
There have been plenty of games where I've gotten bursted to like 5%, popped CDs, and we ended up winning. If the other team gets a buff just because of their burst that is pretty stupid. What's stopping a Hunter/Rogue team from blowing CDs, getting someone low, and then turtling the rest of the game until they get the buff? Nothing, really. It's a good change so if someone dies the game doesn't get dragged out, but it's bad that it impacts games that are still even.