Random Changes/Additions I'd like to see (Mostly for killers)
Give Ghostface the ability to hide in lockers and grab survivors when they open it. Wouldn't be something that would get used very often but I think it would fit him well and would be real fun.
Nemesis should start with 5 zombies on bigger maps, no less than 3 on smaller ones. Only 2 respawn as normal tho.
Nemesis should get a Mr. X skin.
if using Wesker's S.T.A.R.S. skin, he should have special mori lines and or grabbing out of locker lines with fellow S.T.A.R.S. members, not just Chris.
Survivors with voice lines should be able to talk mid match, just make it so only survivors can hear it so it doesn't make survivors easier to find.
Barry Burton legendary skin for Jeff or a base game survivor.
It'd be cool if Wesker had another way to infect survivors past just hitting them with his power directly, similar to Plague. Maybe the last gen he broke has Uroboros on it for say 10 seconds at base, 15 seconds if one survivor is infected and 20 if 2 are. Not needed but given the number of sprays getting infection easier might be nice.
For Doctor you should be able to snap out of any stage of madness, with it just taking longer for every stage before 3. Not sure how much longer but maybe a good 30% for stage 2 and 50% for stage 1.
Optional disabled by default crosshair for ranged killers. People can just use overlays so the argument that it would make them way easier is silly because you can't really call using overlays "cheating" so it just makes this option more accessible in game and gives devs control of how the crosshair looks. I imagine the huntress one would be kind of like a grenade launcher crosshair to help visualize drop off, and maybe it only fades in when you start charging the hatchet. Deathslinger might be the opposite where as long as the redeemer is loaded it's visible and it vanishes when you ADS, would just help with pre-aiming. Trickster would probably have a wide shotgun circle one that shows up when you start spamming. Might also be useful for Plague.
Cool cosmetic stuff that happens when a killer is on their map. When Pig is on The Game Jigsaw lines can be heard. When Deathslinger is on Dead Dog Saloon the Glenvale sign is only hanging by one side and the music in the saloon is different. When Nemesis is on RPD maybe there's even more zombies on the outside of the map to be heard. When Wesker is on RPD maybe the STARS office is ransacked or something. Stuff like that.
Killer should be able to change what killer they're playing as in the lobby like I heard they used to be able to do.
If Michael is in Tier 3 he should be able to walk through breakable walls. As in the animation is him just walking through it and it crumbling around him when he starts a break.