For this one I've chosen Multishot-Fire at will to handle most mob situations. With the Bat and EF there shouldn't be resource problems. Not the highest DPS but very reliable and safe. Leet mobs and boss fights are where this build shines. The strategy is to Rapid fire with minimal interruption. As soon as you meet your target, lay Caltrops-Bait the trap, activate Shadow Power-Gloom, and fire away for roughly 4-5 seconds of fun, and yes you are literally 'tanking' the target during that time, afterwards EF and build up hatred for another round.
At first I was planning to exploit Rapid fire with highest crit% possible, then I realised how Night stalker fits in perfectly (if the proc chance is good enough...can't tell at this point?). After adding Numbing traps and SP as defensive skills I realised you can be pretty much invincible for a few seconds. Lastly I picked Rapid fire as hatred generator, there's no more skill slot for Vault etc. Doesn't seem to cope well with Bait the trap at first glance, but when you think of it you'd rather unload hatred spenders when you're baiting right? Archery, Numbing traps are inter-changable with sharpshooter, depending on you weapon of choice and Level difficulty :)
What's your thought on Rapid Fire?