i'm not by any means someone that knows a lot about pally tanks, but 1 suggestion and a question:P.
First (u prly know this) but i'd try and get ur spell dmg up a bit higher, the pvp weapons make this pretty easy:P
Also, y don't u have reckoning? again i don't know a lot about prot pallies so u could have a legit reason for this, i'm just curious:)