Edit:
Okay so I'm not gonna change it to recommended (yet), but the game certainly got better over time. It's still a ♥♥♥♥ runnin' ♥♥♥♥♥♥♥♥ with a terrible story and map, but they are working on it. It's still not enjoyable however. It still feels like a chore to complete.
They overhauled the graphics and blood which makes everything look much better, There's a couple of things added and fixed as per usual, but it's far from enough. The unfunny and overuse of sex jokes (that just feel forced) aren't funny in the slightest and still haven't really been toned down upon either. The only thing I noticed that changed was the sign at the start of the beginning doesn't have them anymore so it's a start at least. The bugs that somehow can even soft lock me are still there, and the feel definitely still isn't as great as postal 2.

I'd say it's still not worth giving a go, as postal brain damaged is still more of a sequel than this ♥♥♥♥♥♥♥♥ is. I cannot recommend this over POSTAL 2. However, it is interesting to know that a bunch of cut content from postal 2 made it into this game, like the weapon permits so if you're into that kind of stuff then this game is interesting enough to try it out. However, take my advice and get it on sale, or just avoid it. You won't miss a single thing aside from Zack Ward's beautiful voice. Postal 2 is a much better game still, and while Postal 4 is far from bad, it's not great either. It still feels bad. But I'm at least filled with hope now that they're actually gonna make this a fun game (somewhat). The only complaint is the story itself, and how padding the first day is. Why can't they just make us choose between the three jobs, rather than doing them all at once? It's a terrible start of the game. (Edit: the entire game actually still feels like padding. Idk how I overlooked that.) Also the map is just far too big to traverse, it's not even fun to ride the vehicles and it feels like an absolute chore. But we'll see where this all goes.

TL;DR, it's still NOT worth a shot with the recent improvements, just please stick with POSTAL 2 for now. Grab on sale in case you're really interested in this, and you might actually get some enjoyment out of it. It includes some cut content from Postal 2, they overhauled the graphics and they're definitely still updating. Those are the best points I can give at the moment, and the game itself seems to be giving a bit more hope about it being decent enough in the future.
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The prototype was better, the humor is literally fecalfunny.com + unfunny sex jokes, and in a lot of ways is a downgrade from Postal 2. I had a positive view on this game first but seeing as the story is finished I found it incredibly lame. Some pros though, it still plays like a postal game and it's certainly fun to just mess around with the npcs, but compared to Postal 2 and the things you could do there, it's still quite lacking. RWS itself is also quite cool, it's just a shame this game is what alot of people see as a "true sequel" even though POSTAL Brain Damaged is more of a Postal sequel than this game will ever be. Maybe updates will improve this mess of a game.

As a Postal fan I'd say ignore this game, Ignore Postal 3 and just buy the other games instead, especially noteworthy are Postal 2 and Brain Damaged.