I'm in the same situation though, cant decide whether I want to level my hunter or pally tank in Cata first. I have more fun on my hunter and with all the changes and trying to get rid of AOE tanking it seems like the pally tank will be less fun lol.
I'm actually in favor of removing aoe tanking in it's current form. In a previous life on my hunter (my first raiding toon on terenas) I was really pretty happy with my ability to chain trap mobs during pulls.. These skills just aren't necessary anymore <shrug>