I personally feel that out survivability is fine; the only boss I've felt has been an issue so far is M-Brackenspore with a 5+ stacks Flesh Eater and 4 stacks of Rot on me, but then again that's what externals are there for (in addition to our own personals of course). I felt like a champ on M-Tectus, SBlock fight of the year right there.
My personal experience aside though, I think the big issue in community perception of our survival (not necessarily Eddy and numerous other posters here, as many of you are more experienced and better at the class than I, I'm sure) is that people still want to use SBar as an all-purpose damage mitigation. I think the best thing ProtWars can do is develop a synergy with their healer(s) and let them know when SBlock is recharging and that you need them to have your back (if they don't, that's when you run into the issue of having to use SBar to make up the difference, potentially delaying your ability to use SBlock again). Just my opinion on it, more about a transition from Vengeance play style to the WoD play style more than a fundamental weakness in our class. I'll see if I feel the same way once we start working on Butcher hehe
Our damage output though....I don't care how many people say that the nerfs were intended for ProtWar and not just GladWar; even if we had that extra 20% back on SS and Rev, we wouldn't be overpowered on single target and cleave, and it wouldn't fix our issues in AoE situations. Would love to see us get a little love, especially since our AoE toolkit is the worst of the tanks (offensively). It's annoying to get a top 10 Mythic parse and still lose to our ProtPal who gets a 25-50th parse