From seeing Custerplays' video, I would love to see that too. Very similar to Arma 3 I believe.
Ghost Recon Breakpoint has good cosmetics, but it can go more in depth.
I think there would be a lot more thinking in how we want to play the game depending on what bag we wear, what pouches we have, what bullet proof vest we wear etc.
In corporating that with team AI would be great too. If you run out of an item, a team mate can give you a hand.