You don't have Defiance (that's wrong) and you don't spec Impale (having two charges is always good) and the stamina drain which are both very useful. I think increasing the duration of the snare is also worth it, snare your opponent and abuse from superior weapon reach, that's what PVP is all about : control.
Also, I wouldn't recommend speccing Iron Skin, gear will give you plenty of armour and if you switch stances/manoeuvres/tactics/weapons you really don't need it. (don't forget that you can switch manoeuvres and tactics even when cc'ed) If you feel your gear isn't good enough you can always spec Iron Skin/Toughness instead of Fortitude.
My spec is this
http://goo.gl/ukWIY the 2 points in Intimidating Shout could be put elsewhere, but when I do Impale+Intimidating Shout I put a nice (but very short) dot on my opponent and combined with my combos it results in a really nice burst.
As for perks... if you don't have the passive AA prot maxed or don't have full pvp gear I suppose you can use Chromatic Warding, yes. But work on getting that replaced with pressing strikes asap
