A player character overhaul was something I was definitely hoping to see, which makes me excited for A20! The player models were beginning to look very dated in comparison to some of the new zombie models that came out in A19. Definitely looking forward to seeing some newer, nicer-looking player characters. The equipment system rework also looks very interesting too, I definitely agree 10 slots is too many, though, without clothing slots aren't heat/cold resist going to become a bigger issue?
The original armor sets (padded/leather/military & scrap/iron/steel) will still be in the game right? Are clothing options going to be in as well? We're going to have to choose between wearing clothes and wearing armor? There's still a few questions I have about all that. I do like parts of the clothing system, though it could be scaled back a bit.
Also, will there be a set bonus armor set for stealthy players?
Another thing I wanted to do was echo some opinions mentioned earlier in the thread; the lack of weapon variety, especially at tier 3, is definitely something that holds the game back in my opinion. Not majorly, but there are plenty of options, at least for firearms. I agree with the devs on character models and animations as well, but I also agree with others here about weapon variety too.
There's only really one endgame option for each weapon category, very few sidegrades, if any. We only have one endgame sniper rile, why not a .44 lever-action? A tier 3 pistol that uses 9mm? There's plenty of options for high tier weapons that'd make for more choice in your build rather than just direct upgrades.
I know it's easy to say "just add more things!!1!" but there are so many options in build in terms of mods, armor types, perk builds, but for weapons it feels like it's just "best in slot" for each category. Meaningful options for at least tier 3 would be great I think. The pipe weapons are definitely a good idea though - the A19 early game was rough until you got that first gun!