Stuff like's this interests me, but I hate the fact that Marvel is shoehorning movie stuff into the comics and don't really want to support any of it. Rhodes should be War Machine, Nick Fury Jr shouldn't exist, so on and so forth.
However, all of Marvel's B and C-tier character books have been awesome, so I want to read this.
Why does having a public ID mean he can't be Nightwing? It works for Captain America and Iron Man.
Because it would fuck up batman's life.
No it wouldn't. Bruce Wayne is publicly known as financing Batman and Batman Inc, which would've included Nightwing. This means nothing other than one person financed by Bruce Wayne was unmasked. Considering the distance put between himself and the identity of Batman via coming out as the one paying for Batman and the staged rescue of himself in Year Zero, there's plenty of wiggle room there to keep people from eying Bruce as Batman.
Unless we come up with inertial dampeners, the answer will always be no. No exoskeleton will allow the human body to withstand the forces behind something like a punch from the Hulk. The suit and components might survive, sure, but the person in the suit wouldn't survive being rattled around like that.