sharpen blade has to go in my opinion.arms has suffered enough nerfs because of it.ppl didnt understand that it wasnt the dammage the problem but sharpen blade itself and its healing reduction
give arms some mobility.the way it is now arms and rets have the lowest mobility ingame with the difference that arms cant dispel roots.it seems like arms is perma slowed in arena always trying to chase in slow motion
give arms some self sustain.its the only spec without selfhealing.arms is forced to sit in defensive stance doing 20% less dammage.even so it still gets tunneled and die while you feel hopeless having nothing to press.its a bit better when facing melees with die by the sword,but its only a short panic button against them and it wont help against casters.arms seems tanky in paper,its squishy though.you need a very good and aware healer to keep you up.on top of that pvp isnt only about arenas.you cant que in bgs or skirmish solo as an arms
remove the def stance +20%/-20% failed design.make it 5% dammage reduction and give us a wall with 2 charges or something like ferals or a short cd wall like every other class has.or barrier like in wod
last one.make the spec feel faster.its so slow and it feels slow.put overpower off gcd and raide its cd by 1 second to copensate or something,there shouldnt be any problem balancing it.like when heroic strike existed.the spec felt faster
the animations need a rework too.they are also very slow.its a minor thing,has nothing to do with pvp, but their visual seems to follow the slow arms spec playstyle
you can make all that taking in consideration the class fantasy.make those things (wall,selfsustain,mobility)work like other classes tools with minor alterations that could fit the warrior class fantasy
for example:taking a big chuck of dammage could give you a short heal,or you could sucrifise your rage for a heal.berserker rage could give you a short speedbuff and surpress roots for a very short time.just an example.those are small things which are easy to balance and could make the spec more enjoyable