Go with kitties...

Berserk x5, is a fear break and 15 seconds immunity (20 glyphed), plus you have your trinket.
I'm thinking my second glyph will be full health from battle rez, which will be round-robin.

I'd think the DK/Ret team would have the edge in arena, but am not sold on them being stronger in battlegrounds, especially with all the toys druids get.

You also have dual-spec for Bear + Tree, for the PvE aspect of the game.