Same video I watched when I was looking up crossbow builds, lol.
I do wish someone on youtube would make some more current build guides. Nerd Commando is always the first one to show up, and some of his builds look a little wonky, to be honest. The fact that he often skips lockpicking and hacking makes me think he must be playing on classic difficulty.
Anyway, I followed a variant of the Arbalist build, and one thing I didn't do was grab Temporal Manipulation. If I was going to change one thing, that'd probably be it. Well, that and the fact that I left my Will at 4.
Yeah, he has some good ideas but some of his choices I don't fully understand. I tried this build for a bit, loved / hated it, but eventually gave up. Just way too tedious with the quick tinkering nerf and very little crowd control.