I'll admit I'm derailing a little bit, the bunny suit is long overdue and is a really solid example of promises not delivered. +1 for please get this out to us now.
but..
Can you deny an option to hide other players .. uh.. tastes, wouldn't be totally useless? For the same reasons people don't like hearing bard performances (they're adding a way to turn this off), people might not want speedo torpedo the wonder roegadyn tank dancing around them in town.
Options to change personal perception are always positives in my book as long as they don't change gameplay or give mechanical advantage in pvp.
I think I saw something about red/blue teams in PVP already? If so the mechanic is already there. I could be mistaken there since my pvp was limited to getting a few wolfmark pieces then stopping.