#1 - March 1, 2007, 5:42 p.m.
Well, I've heard a lot of people say they don't like it because it revolves a lot around one function, which is spamming lightning bolt. It tends to lend itself to raiding situations as a dps caster.
Friend of mine, who never liked Enhancement that much, is currently stacking spell damage and mana/5 and seeing some fairly large crits. With his spec, he's also helping out his mana regen, so the sustainability is getting better.
But, yeah...just opinion. ;)