I would have done more HA and GvG if there was a way to get into games fast. I hate wasting time LFG. That said, I really liked JQ, FA, even RA. WvW and structured PvP are good for me that way. I like the idea of playing a hybrid there, especially one that can swap between healing and damage.
I realize the guardian doesn't have good ranged options at the time, and I hope they fix that. What I didn't like about the staff was skill 2, which is slow moving long-range that you can't even spam. I really liked skill 1 but it is medium-range at best, I'd rather use melee instead. Scepter might be slow, but at least it's spammable. Plus the scepter can be combo'ed with any offhand.