I'm currently running a poison Rogue build (lvl 39) with the following abilities:
Actives:
Primary Forceful Arrow
Advanced Twisting Blades
Methodical Dash
Countering Poison Trap
Rain of Arrows
Poison Imbuement
Passives:
Exposure
Weapon Mastery
Deadly Venom
Admittedly I am following a guide from Gamespot because I'm not smart enough to find the most efficient path for most damage. Often I find that my sorcerer friends take down enemies a ton quicker but it could be because I'm not playing my class correctly yet.
Any recommendations or just want to share your other class builds?
Something I have found immensely useful is the filter on the activity panel, top-right of it. Being able to easily highlight for eample abilities that does something with vulnerability gives me so much better overview. Really helps me determine where to put the points when I'm too lazy to tab to a guide.