It seems to me that the way our healing is supposed to work is when its intermingled with melee when we have the chance to hit the mob for some mana gains via JoWisdom. Hit the mob for mana a few times, cast an emergency heal, rinse and repeat. I found that this method of support healing, even as a 14/0/43 Paladin, was very helpful in terms of putting out good damage, being involved in heals, and maintaining respectable mana amounts for emergencies. Spiritual Attunement helped out in this, as the bit of AoE damage I took would get me some attention from the main healers, which would replenish my mana for more healing for others.
This is superb news. It's basically how I play now, and Blizzard has made it even more viable. This is what a Paladin is supposed to be. Honestly, this paragraph has made me eagerly anticipate the Burning Crusade.
In particular, it looks like Blizzard has hit a home run with Spiritual Attunement, which gives you back mana when other people heal you.
We also got a Strike! Crusader Strike is the new 41-pt Retribution talent. The paladin boards are rejoicing. The strike is pretty cool, but I'm probably still going to go for Captain America (heh, I don't even know what the real name of the talent is).
As well, apparently we have new animations and effects for our Seals and abilities. This is a *much* needed change. Previously our effects were very bland. The PvP people probably aren't going to be too happy, as snazzy effects tend to give information to your foes, but I think it is neat part of playing the game. As well, you need to be able to get info from your enemies in order to react to them. Makes the fight one of skill, rather than just a guessing game.