Got my Thief to 80, questions...
For WvW roaming you could do a D/D burst or a P/D condi or hybrid stealther, usually with SB as the secondary weapon. I don’t have exact builds handy since I mostly do tPvP and PvE, so someone else can probably provide that.
This is the dungeon meta build: http://en.gw2skills.net/editor/?fZAQNAoYVl8Mp6pNOxwJ0PNRLRtdHsBfgXnh2XQAEiA-TFCBABVq+zZKBxa/R5HAHAh803wwBEIg3UgeHCgAAHA/23++b++7v/+8zP/8zPvf/93f/93RBERA-w
PvE is pretty much always full berserker gear. You can tweak utilities depending on the situation, but that build will give you the highest damage output you can get. If you aren’t comfortable with your survivability yet, you can switch to S/P SB 5/6/0/0/3. Less damage but more forgiving with pistol whip evade frames.
Badding up tourneys since 2012
NA tPvP – Elementalist – Thief
NA tPvP – Elementalist – Thief