I've been playing the beta as well and have really enjoyed it. I LOVE the Rift public quests and having the opposing faction invaders wreck quest hubs. I really like the class design. I have played as a Defiant Cleric (Sentinel/Warden/Inquisitor) and there are many other combinations and classes/races I want to try. Healing is similiar to WoW (clicking on raid frames) though there are some souls that do healing through dps (Chloromancer comes to mind). One thing I enjoy as a healer is that, when you are fighting a Rift, you can rack up a lot of contribution points by healing people and get a nice chunk of planar rewards. I also really like that.. public quests are public. People are slightly more accountable to each other because you'll need each other to close a Rift. If you try to tag a mob I'm halfway through my cast on, or mine some ore I'm obviously trying to get to after this kill, I won't heal you at the next Rift :P
I've been on the fence about preordering. Do I want to pay for 2 MMO subscriptions? How long will my interest last? I raid 3 nights a week in WoW but honestly I have become bored in WoW and only log in to raid or check auctions. So I would have the time to play it. I think what will be key is what endgame will be like. If it's too much like WoW (grinding rep/5mans and then typical raiding mechanics) I probably won't play it.
Vuhdo 101: http://www.youtube.com/watch?v=SBoImKCY1Fs Vuhdo 102: http://www.youtube.com/watch?v=gEbM0XG7XsU http://www.twitter.com/soragrey