I may switch up to Tactical Advantage PS and Hot Pursuit PS every once in a while also... but other than that I don't change any skills.
If you ask why I use Chakrams that one should bring back memories from the earlier difficulties... I use this because it is the only skill that completely goes off the map as far as reaching enemies far away, through walls, up and down stairs, across ledges etc... I know rapid fire, hungering arrow, evasive fire also do these to an extent but not with the same range and same damage that Twin Chakrams do, and they cost 10 hatred which is nothing in my pool so I can literally spam maybe half of my hatred pool and a whole pack of champion mobs will be dead in literally a few seconds as long as I throw down a trap and have my distance measured correctly. With all the added run speed and proper stutter stepping and kiting you are boss and will not ever die... when I encounter wallers and mobs that are getting dangeriously close to me I will pop SS with run ability and run BACK past them, they can't hit you when invisible and then you have room to breath while you get your discipline or hate back up. Hope this helps some having difficulty.
My DPS is 39,000 with 28,000 HP and 200+ resist all. I also have 150+MF so it's way up there with +5NV. GL to all.