You will still one shot people with 4 Shamans vs 5. In Arena there is no point trying to 5 box it unless you are just farming crap points while afinding ah ealer.

I would have a pally os you have so much more open to you. Think WotLK versus PvP and imagine being able to do every single instance yourself.

On your own times your own shchedules and never have to type /afk to yourself

While I am not happy with my Priests, I dont have the haeart to level the Shamans afresh so I will play the 4 priests in Pvp and just use Slats for PvE. I also have a 70 Shaman that is going to be resto for the harder PvE encounters where I can kick ap irest out.

To sum it up, with pally you have the full casual end game open to you. With 5 shamns you do not.

-Slats