When I began playing Balance, it was out of necessity rather than any real desire. I was Horde at the time, and we had more than enough regularly signing tanks and were in need of ranged DPS players, being heavily saturated with melee players as we were.
I enjoyed the new version of Balance and actually still do. I like how it plays, especially in comparison to the older Eclipse mechanic based version of Balance that had been done away with. Yes it is now much simpler, but that is to its benefit IMO.
However, the main problem that Balance has seen all expansion so far, and one that looks certain to continue, is the damage ceiling for the spec.