As a Sunwell raiding SP I love Dispersion. I need an "oh s!8%" button as much as any other class. I already effectively have 4k less HP thanks to SW
eath backfire.
- A Mage in Sunwell would have 10k HP, Iceblock, and Fire Ward.
- A Warlock has 12.5k HP.
- A Shadow Priest in equal gear has 6k HP and only a lame PW:Shield to try and keep ourselves up.
I'm not sure I care about the mana return but given the huge nerf to VT I'm sure it will be a lot more important in WotlK content. As far as the "oh s!8%" button goes if anyone thinks it sucks then you need to stop "raiding" Kara and do some serious content.
PS - I appreciate that SW
eath doesn't always crit
but I have a 34% chance of it critting raid buffed right now. It does hit for 4k. Even with the 60% less damage taken it will still crit for 50% more so we're only looking at roughly a 10% saving on Crit Backfires.