Cross Platform Messages/Communication
I believe it would be a good feature of the game to be able to talk to people who are on different platforms directly. Even if it was something as simple as to Accept or Decline a SWF invite "with a message"
Example: someone on PS4 sends a party invite to you on Steam and you do enjoy playing with them but you are already in a 4-person party. You are only given the option to Accept or Decline the invite in current game status with no way of telling them that you are currently occupied. Leaving them to wonder exactly why you wont accept.
Imagine if instead we could "Decline with message" and tell them "I am currently in a full party but if you are still around in 2 hours I am glad to join you then!"
Or on the flip side you can "Accept with message" and tell them "I'll join but FYI I am doing a challenge that requires me to escape through the hatch with a key, I am bringing an offering to spawn the Hatch at Killer Shack"
This would help to eliminate a lot of problems with spam invites, anxieties if someone wont join your party because they can't talk to you in any way, and it would also help to let your friend know if you are doing a very specific challenge so they aren't wondering why you are "trolling" when they invited you to play.
I think this or something along these lines would be a great implementation in DBD and I hope we could get this feature in the game soon if it is possible. The fact the game lacks any form of direct in-game messaging is quite off-putting and I wish I had some form of ability to talk to my random cross platform friends that I have met from some wonderful games. Thank you for listening!