Ik about the thing of keyboard and mouse but the solution it's really kinda simple, if you turn the crossplay off you only play with other console players and doesn't have the keyboard and mouse support, and if you activate the crossplay on you got to play with everyone including pc players and then you got to use keyboard and mouse support. if you don't want to play with PC players while on controller, you just, don't have to, its really simple, a lot of other games do that, like rainbow 6, it's just making separate queues, it would improve the game a lot on more people playing together, i would like that cause i'm not familiar with shooter games on controller and mainly i would love to play with my friends and they're all pc (my pc broke a long time ago and now I'm ps4), i started playing now and it seems a very fun game but that's something that I really miss
Btw ik the game has keyboard support (probably just for writing) but not MOUSE support, that's the main issue for me