Would just like to share my experience...
I'm currently a level 38 Horde Priest. I don't mind a good, even-leveled fair fight...and in retail I have only ever played on PvP servers. But I've lost so much time because I'm getting killed constantly, as everything from about level 25 and beyond has been contested. I'll get jumped at 10% mana and I literally can only just watch for the 5 seconds I have.
And honestly...it's not even that I'm being greifed or camped...as I'm generally getting ganked by a completely different ?? each time. It's like they're everywhere just trolling around.
This is no dig toward the Alliance players...as I'm certain there are just as many Horde players doing the same thing. I just honestly cannot recall so many higher level players killing lower level players in retail, and for the first time ever I would like to try a PvE server because of this...knowing that my toon and the PvP server will continue to exist so I can always switch back.
I am grateful that this server exists, and if my experience makes me a "carebear" then so be it. 1700 people logging on for a 30-minute window, when they state that the server would cap at 2500 is a giant success in my mind. I am in full support and hope they release a PvE server.