This thread is exactly what I've told every rogue complaining in game. Nightstalker is very hard to pass on with the nerfed mobility, but I could never give up sub/sub with the bracket in its current state. Its the strongest counter to Holy Pallies other than moar Holy Pallies. Once they're fixed I'll be more open to playing around with it (the other specs/talents seem fun and absolutely viable), but right now I need to put bad HPals and druids in the GY as often as possible. Sub/sub not only has two ambushes, but the first one procs Find Weakness. FW is HUGE for that second ambush and the 5 cp Evisc.
This is not a professional bracket. An orange or pink name doesn't magically make skillpatch hunter rerolls good at this game. We're talking about FotM rerolls in the home bracket of some of the worst players this game has to offer. There are a lot of bad druids and pallies right now. Rogues kill bad druids and pallies. Ergo, rogues are very strong despite the mobility nerfs.
Think back to the good old days (last week). Most strategies for killing hunters relied on them not being very good. A good hunter would never let you get closer than 35 yard range, disengage up a hill, disarm a mage, open with scatter on a healer, etc etc. Most hunters were bad, and that made them beatable. Great druids and holy paladins are a goddamn terror, just like great hunters last week. Fortunately, great player are an outlier in this bracket. Most holy pallies right now are just hitting people with holy shock every 6 seconds and spamming denounce in between.
I'm still working on my positioning to stay on druids in mid, but you can easily burst one down in the base. For a holy pally EFC, bring an unstealthed friend to eat the holy shock so they don't use it to heal, then its GG.