Good questions, but this is going to be a 1 hour playthrough, not a development discussion. I second the question about removing cooldowns from the DH skills. Hell, all skills should only have one cost as far as I'm concerned. It's ludicrous that a skill should cost time and resource, especially for the DH class though. Otherwise why have hatred/discipline at all? Just go resources/CDs like every other class.
Also since you'll be running your Barb, I have no idea what build you're running, but I found my barb to be unplayable on the PTR. I'd probably be an earful if it were me playing with the barb/DH design guy, because the barb is very unsatisfying to play right now. Maybe Avalanche makes things all better in RoS, but I somehow doubt one new skill and it's runes save the class.