Thoughts on Living Bomb:
Holy *** holy *** holy *** overpowered nerf incoming.
The spell, at my level (70) and at my current spell damage (1100) is critting on ticks for 1800 damage on the mob, and every mob around it, knocking them up in the air, every tick, and then it does a blast wave at the end almost effectively wiping out any mobs left.
I see this as a huge help to certain situations like:
1. A big elite mob with a bunch of cronies around it. Pally tank goes in, living bomb cast on the elite, wipes out all of the adds without having to waste time AoE'ing, huge increase to DPS, no cooldown on living bomb either. Also serves as a mana burn as well. Add in impact and I *beleive* that impact can proc on each tick, but I'm not sure. I'll have to test this.
2. PvP (Think Alterac Valley cast on someone trying to take a flag), or useful to get some added help in getting someone away from you
3. Farming. Gathering a large amount of mobs, living bomb and improved blizzard anyone?
I'm sure I can think of a few more, but this spell's looking pretty promising.