My biggest concern, excluding incredibly lackluster damage, is that even if you build the Revenant full bunker with lots of healing the elementalist and necromancer will both still out-heal you, out-tank, out-boon you, and extremely out-dps you.
While it is a known fact that necromancer and elementalist do too much currently, I still fear that Revenant has little to no place in the current PvP. Hopefully elite specs, deserved nerfs to certain classes, and a revenant buff will help this out.
Also, the centaur legend stance is incredibly clunky. The healing burst takes too long to come out with not that much healing anyways and has too short of range. All the skills, excluding the bubble, also seem way to costly for what little they actually do.
Edit: I also feel like weapon skills costs energy is a little ridiculous. The energy system seems more like a gimmicky mechanic that actually screws the revenant over than buffing them.