Playing on pure vanilla settings on latest experimental... i like it "a lot" so I'm only posting Some a21 "negative" input with details/thoughts for brevity, I'm on "day 9", still in the forest biome.
- Doors: when the first "hole" appears, its always centered right at head level for most zeds (who also stand mostly right in the middle of the door while breaking it). Ive found myself using doors as natural barricades to get easy head shots. Maybe move the hole off center on some doors?
- helmet water filter: i found one in my first day in loot. Yeah "i could have chosen not to use it" but i do feel looting it (and early) should be nerfed somehow. I think it should be "buy only" and/or crafted only and nerfed as a mod so its not 100% safe to drink with. Maybe 5-8% dysentery chance.
- murky water: i found a lot of this on loot. I just started drinking it without boiling and got quite a few in me (like 10?) before dysentery kicked in. I feel that the dysentery "chance" should be upped a little, to discourage drinking more, but its been that way for forever so ... maybe make it like meat where its 5 bottles of murky water boils to 1 boiled water?
- player created doors: the health on a first tier wooden door is 1000 hp. While the early zeds were able to do a lot of damage, it was super easy to just repair it "whenever" while they beat on it. I feel dropping it a little might make it less OP.
- Food: im finding a lot of food. I have not had a food issue its so much.
non a21 micro complaint: it's always kinda weird to open a box or a cabinet and find a open "bowl" of perfectly good food. And also weird to just put that in storage/backpack (like a plate of bacon and eggs). I know its just graphics but the only "feel good fix" i can think of other than changing the graphics (as you do craft them, and then it looks/feels good as a bowl/plate) is removing them from loot. I know its always been this way

. Kinda like the "pie" doesn't seem to come in a dish...its just a pie.. it feels like it should be in a box or saran wrap.
The log item: hitting trees/blocks gives ...planks. But i have to... craft a log from .....planks?
Generic micro complaint on the UI: when using a workstation, having the "craft time" or "cook time" be on top of the crafted item makes it hard to see. Maybe move the time below/above the item? Example: cooking eggs: its white eggs with white cook time on top of them.
a21 "positive" input: theres a lot to like, my faves so far other than "graphics update" and "new blocks" and pois, which are all great:
- the occasional feral early game. yes!
- multiple doors opening when hitting the keyrack And i have seen 1 door sometimes open/close based on... err.. a spot that can be stepped on? Good stuff. It looked like a zed opened a door which was cool.
- new sounds. Thanks!
- progression/items/etc: feels good, esp with the "i can sometimes loot good stuff". It slows things down a bit but not severely, always something to work towards.
- all the injuries when getting hit: i like it.