Well it depends on the teams needs at any given time,sin yes mm off course bd but I like to use it not fr its aoe but more because of its survivability cuz I mostly solo Q fr support I m really enjoying bard fr all its utility, in the right hands can be very important in pvp this days.I do miss NB but atm seems pretty weak, Trion buff NB pls.
so whats my best choice? 61 sin? or like 54 sin / 22 bd?
Assdancer is extremely sub-par in 4.0 - Parses lower than 61 sin, best bet is to make a pvp orientated Sin spec, something maybe like BD as an off-soul or SB for the debilitate - Just have a go at what suits you best
if you dont want to tact or bd, what you play as rogue in pvp?
For pvp you will need to figure what you like to do and pick builds, for example, I always stay to protect flags/points because ...well, nobody does., so
1. Codex and Chamber - protection of main flags - 32RS + 44 Phys. Keep spamming aoe from phys non stop.
2. Others - whatever you like or group need.
As dps very good is ranger + 12/15 bard + other tact (legendary bolt!, spam it). Use bird, has fun staying into 3 mages aoes at once and wiping em' 1 by 1.
3. If you have pocket healer - go sin as they said, or NB.Otherwise it will be short-living damager in average. For example, my RS+Phys needs 3 sins attackers at once to kill it on flag in 30 seconds, otherwise 1-2 sins will fail or will be dancing 3-4 mins. In codex they will not be able to kill at all, bcs of rocks around and teleports.
P.S. Latest PTS shows it will be many changes again. Ranger gets a boost. Now I can kill enemy sin 1 vs 1, later maybe stronger, dunno.