I usually don't replay in official forums, but I just cant make any sense of your post.
I've been going through the patch notes, cant find the aoe nerf you talked about, only thing that applies to aoe that changed is the move of 1 talent from vengeance tree to rage and it doesn't really nerf anything.
besides some talent moves that don't really change much we get a threat buff on our biggest hitter.
now regarding our current situation (witch isn't going to be drastically changed)
we are more then fine, while we have a bit less sustained survivability then PTs and Assassins we have the best CDs and not mention the most CDs.
healing either tank in good gear/skill is going to be pretty easy for most of the time, though when the **** hits the fan the jugg is gonna be the last one standing.
regarding our aoe threat problem, yes its weaker then the rest, but in all honesty trash tanking isn't all that hard anyways and its very trivial compared to tanking bosses witch in turn also means it matters less
we are also behind on dmg yes, but the dps difference between the 3 tank classes on a single target aren't all that huge and wont change alot in the grand scheme of things
I think i have to say that my experience is both from healing and tanking, since my main is a healing merc cleared all NiMs and my alt is a jugg witch did 8/10 NiMs
TL;DR
currently we are fine, we have less sustained surv and less dmg and aoe, but we make up with better CDs and more mobility.
the patch gives us abit extra single target dmg and threat, and doesnt change much else
conclusion 1: we are fine and will be even more fine after patch.
conclusion 2 : you either don't like the flavor of juggs, don't really appreciate the pros or just have fun crying over he internet