http://www.titancalc.com/TitanCalc.a...1-0-0-12-1-0-0
Max Marksmanship first, you could pwn the whole game with only that skill, I swear (And Study Prey for bosses).
The thing is that most people do when they see it (as I did) they think 'cool poison archer; hit once then watch it die

' but you should be thinking 'Hunting mastery can beat game by itself, but what useful effects does Rogue have?'
Poison doesn't do ANYTHING in this game, mainly because as you said everything dies well before it can kick in, but the slowing/confusion is good and Lethal Strike can be good (I've never had need, Marksmanship is so powerful already).
The good thing about TQ is that you can chop and change your skills, so try it out and see what its like, you can always try something different.
Edit: There is a lovely thread on the forums by the name of 'poison builds for legendary' or something, it has possiblities on using poison as a main damager.... but I love it the way it is, poison is for skill and cunning etc, etc. Something nice for veterans to try out, the people who already have 2 of everything needed
