Not like RO is balanced anyway, but it's still a fun game nonetheless.
I actually worry more about the scope of the game. It seems really big for a launch title, and I expect we will have a ton of bug early.
I also hope it will be subscription based MMO. I can't say I have enjoyed the limiting in all those F2P MMO I've played that feel like it tried really hard to make you pay here and there with every feature.
[edit]
More class preview.