Been playing since early days before Steam and I think this is the best build yet - without question.
I love the skill system revamp - SO much better than the last iteration.
I'm fine with the inventory system, stamina, death penalty, and all that. Simplified quality system is better. New gun/mod system is better.
I've long complained that the game lacks long term play goalls/support and the past few builds sort of dealt with this with skill progression but I didn't like the previous grindy skill system. I think the A17 system is vastly superior. I'm fine with level gating - it gives you goals and paces the game better (vs vets going high tech immediately).
I think getting way more xp for zombie kills vs crafting/gather makes 100% sense because killing zombies is a real challenge. Grinding crafting/gathering is mindless grind - the wrong kind of grind. I do NOT miss sitting around crafting dozens/hundreds of items ever night to get xp ala previous builds. I don't play 7DTD as a pretty alternative to minecraft. If I wanted to focus on crafting/gathering I'd just play (heavily) modded minecraft since nothing touches it for that.
We (me and 1-2 others) play co-op PvE so the PvE challenges are nice, and the shared xp bonus is sexy and further encourages co-op. We're way more inclined to stick together, clear together, etc, both for xp and the danger level.
The new graphics are awesome. Haven't seen that much yet but what I've seen is very nice. Ex, Diersville on nav map - holy crap - so atmospheric and awesome looking.
Zombie spawning also feels generally better. Used to be that you arrive at a POI and a small horde would materialize out of thin air. Zombie presence feels more natural/organic now. I also feel like using guns only draws nearby zombies instead of causing more to magically spawn in, so using guns isn't completely annoying earlier on.
The few things so far I don't like is that I don't think zombies should be smart, and moreso, I don't think zombies should be hiding, sitting up in ceilings, shelves, etc - in places there is no way to get to even. It feels to contrived and like they are placed as in an RPG dungeon and less like open world survival. The dungeon style POIs are a tad bit overdone in this regard, IMO. While fun, the loot payout vs effort for these also seems generally horrible.
Coupled with that, is that at a place like Diersville, EVERY house is a mini dungeon. I don't think in a real zompoc that every house would get fortified or layed out like a dungeon.

A mix of stuff that can be looted in a reasonable amount of time vs dungeon houses would be ideal, IMO. It's easier to break in and loot a business that will probably have way better loot than to clear one dungeon house.
Minor beef though because the tension and interest level of this stuff is so much higher than speed clearing buildings was in the past. But damn man, you clear a house dungeon with 50 sleepers, finally get to the tasty loot crates, and they contain paper or some junk wrench - that's a kick in the nads.
Overall, great job!
I feel there are a lot of negative comments by people who want the game to never change, or don't want their pet part of the game to ever change. That's not how development works. This game is still called alpha no matter how amazing it is. Development in general often tends to be "iterative" which means, things change over time, sometimes a lot. The devs are doing what they think is best for the game and all players, it's not a personal attack on how you play. Enjoy the ride!