Generally, paxilpwns, I would have to say that maybe you should look at changing your playstyle a little bit as Discipline. The Paladin playstyle
seems interesting, but it's not. Really.
And Discipline Priests are stepping down off the pedestal of the "trying to be ultimate tank healers" and acting as support/burst. In 10's, they can hold a tank up through almost anything. Toss out a couple bubbles. But those same bubbles can be an instant "heal" with no cooldown, on people who are about to take burst damage, or those who already have and are in danger of dying.
8k "heal". Instant. No cooldown.
It's the only support healer that exists, and its role is a little less defined than others, obviously. But there's no flexibility with a Holy Paladin, other than deciding if your target gets a Flash or needs a full on Holy Light, or if you're moving blast out a Holy Shock. :
Awesome.