That's great, but keep in mind that we get to see inside the heads of these heroes. It's not like DD and Spidey don't consider the consequences of their actions. And unlike the likes of Tony Stark, neither Spidey nor DD have the deep pockets to fight off all the completely illegitimate lawsuits that would no doubt spring if they're secret id is released. And if Feige really does follow the current comics, then it's entirely likely that heroes with secret id's can, indeed, be held accountable for their actions (see the semi-recent arc where Matt served time as DD as DD while not having to reveal his secret id).
So honestly, accountability shouldn't be a problem there. The source material already has a solution.
It really depends on the supervillain, quite frankly. Fisk knowing DD's secret id, sure. Jester, I just don't see the point storywise.
I mean, up until recently when Matt revealed his secret id to Spidey, they were already doing this. The comics have already been doing a bang up job of letting the heroes get to know one another even with masks.
I mean, sure, but at this point, that's speculation at best.
So can every hero being in the business of every other hero's in and outside the costume.
So far it's been a fun ride, so I'm not going to complain until there's something actually to complain about.
Really? I think Dr. Strange breathed new life into the MCU.