1. My main beef as of right now is that there is no restriction on how close zeds can spawn from a player. Right now when going around a map, you can look one direction for a few seconds, then turn around and see a small group of zeds in a spot that was just clear. This is even worse around corners where you're trying to avoid the chaos behind you, or at least shoot while running, only to get body blocked by a zed that you didn't see coming. This is even worse as there are times where you are running away and a fleshpound or two of them come around the corner as they just spawned in (enraged). There is already a restriction that prevents zeds from spawning in front of a player, but this 2m away spawn BS causes many games to fail because the director decides to throw some big zeds directly in your path.
2. Sound changes that get unnecessarily thrown in with each update. This is very notable with the fleshpounds, as their pitch keeps getting altered as the game evolved. There is no real reason for it, as I thought it sounded just fine; it was lighter for QPs but deeper for King Pound. Not only that, the spawn roar for fps is the same on multiplayer and prevents you from knowing whether a FP or QP spawned until you see them. This isn't an issue for single player, but on multiplayer Id like to know if I'm dealing with a swarm or a few brutes.
3. On the subject of EDARs, I dont understand why they need to share the spawn pool with stalkers and husks. They should be given their own pool just as the clot variants and gorefasts as while it might make some sense for the bombers to spawn with husks, why do trappers and blasters spawn with stalkers? They're more likely to mess up whatever coordination the zeds in front of them have than be of help.
Last piece I have is to make some less popular skills more enticing. With the changes to Fragmentation Rounds, the skill now competes with sonic resistance as no one wanted to deal less damage; as a demo, this was counterintuitive to your perk as a whole. You could also potentially change some zed time skills that offer little use or are impractical due to the stats a perk has when maxed out.