Great guide!
You are well-known sniper crossbowman, Dave, and I respect you very much. I waited months for your crossbowery guide - I just knew you will do it one day and here it is!
One thing I can add about builds:
(speaking to players)
If you are really experienced sniper (definitly not like me) and/or just love being accurate (like me), you can get an awesome 15 str/27agi ~~180 wpf sniper crossbowman.
As Dave commented some time ago, and he is partially right: Why would any crossbowman need 180wpf in crossbows?
Here is the answer: reload speed and accuracy. And the fact Dave may not know or at least didn't mention in guide: more wpf = less time between mouse button pressed and actual shot. Fact visible at most when using sniper crossbow (Arbalest).
I had a screenshot of masterwork and normal Arbalest + ~~170wpf somewhere, will show it here when I find it.
EDIT:Reticule of Masterwork Arbalest and Arbalest with ~~170 wpf in 3rd person /\
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It's a sin to miss not moving target at range < 30m. With 180 wpf - not tested by me yet (30 lvl needed. Oh, sweet grind...), but I bet better reload is worth it if you mind melee fights (8 athletics if you hate melee, 5 ps 3 athletics if you can fight melee well)