Localized in-game chat and new item
On F13, you can only chat with other players if you're close enough, which the killer can hear if they're within range. You can get a Walkie Talkie and then you can chat with anyone from anywhere. I absolutely loved this feature. Dead and struggling survivors can't chat and we don't need after game chat.
I know there are concerned about toxic players saying nasty things to each other, but I think the benefits of adding this element would be huge for DBD and a lot of fun. Would also be great for meeting likeminded players you'd like to play with again, helping with networking and building the community.
Survivors would be careful not to say anything when in a terror radius or when being sneaky as to not tip off the killer. It adds additional realism and strategy. The deafness feature, like added on the hags perk, could be used more to remove communication as well. Madness could have a delay in communication or other voices masking the sound, making it confusing. (Might be a stretch on this one, but one of you may have an idea on how this could work).
Having to be really quiet when the killer is near makes it feel like you're really in danger. With a mic, you get benefits and risks. This addition would make the game feel so fresh. Adding a few location restrictions, like walkies disabled when inside the exit gates and basement, would be neat as well.
This may not work perfectly in DBD, but I personally think it would be an amazing addition that's worth discussing and testing.