What mechanics you want to see being included/expanded upon in a possible future game?

With all this talk about ND going back to TLOU after Intergalactic, I've gone back to thinking about how the already great gameplay could be enhanced.

One problem I have with the gameplay is that damage doesn't really affect how you or the enemies fight. A guy who's been shot twice in the torso will fight the exact same way a guy who hasn't been shot at all. And I know most games work like this, but I think ND could go a step further and give us more realistic consequences for damage outside of shooting specific places to stun. Stunning itself is also kinda weird. It makes sense that shooting someone in the leg would put them on their knees, but five seconds later they are running as if nothing happened. And it's weird how other kinds of damage usually don't stun as well, like hitting someone with a fricking lead pipe. Hand to hand coild also be improved, maybe with a more sophisticated grappling or defending mechanic.

Some things in stealth also bug me a bit, like enemies not seeing a brick/bottle being thrown right in front of them, as well as not noticing someone jamming a bunch of scissors into a baseball bat five feet from them, or someone swimming and splashing around next to them. But the moment you stab someone too fast that automatically alerts everyone lol.

Anyway, I really like the way combat works, but still think it could be even better.