currently, we have scope sway, but it is pretty one dimensional. You level up your oxygen skill and scope sway decreases. However, I think it would be a good idea to have scope sway based off ‘exhaustion’, that is after running around / jumping a lot, scope sway and breath is worse for a period of time. This would serve two primary purposes in PVP.
Currently, it is extremely advantageous and powerful to constantly be jumping around and strafing, regardless of whether you see a target, or are just scouting. This scope sway change would work to punish excessive jumping in particular (but also strafing and strafe sprinting to an extent)
Currently, the bipod serves a very niche role in most circumstances. The shallow pool of advantages over the vertical grip (horizontal recoil, hipfire) combined with the fact it basically forces you to dropshot (something you really don’t want to be stuck all the time doing) makes it a pretty poor choice. The addition of this heavy breathing mechanic would make the bipod serve a greater role in reducing scope sway.
now obviously the sway shouldn’t be unbearable, and there could be some skills, medicine (morphine mabye?) and other factors that go into this, but this is just a quick suggestion, not nessesarily a fully fledged idea