I think I'll just watch some streams of that one eventually, but I'll pass; at least for now. If I do buy it (and I highly doubt it) then it'll be in 1 or 2 years after patches and so on (and in some holidays sale too).
I liked the original enough to finish it (base game that is). However, I started the DLC and got bored after maybe 2 or 3 hours in, and I stopped since. But I did sort of enjoy my time with the base game overall. I didn't really care about the story and barely followed it, nor would I recall most of the game's story anyway. So the sequel's story and/or disappointing characters / character chemistry / writing quality / voice acting quality issues I've seen in some reviews wouldn't be much of a problem for me, since even the original didn't 'grab' me much. I still recall one particular moment in the original's story that just basically destroyed the whole immersion I did manage to get out of it (very little though) and I took the game with a giant grain of salt after that one scene (which I won't spoil just in case). It's the only part of the original's story I still recall though, ironically enough.
For me the original game was more about "Just mess around in an open world with zombies / mutants / enemy humans" and that was sort of it. No incentives to return even to the base game after I finished it. I'd have given it a decent 6.5/10, maybe a 7 if I'm being very very generous. It wasn't bad, it's enjoyable but forgettable after one playthrough (or... well, it was, for me). So I really don't mind if I pass for the sequel. If I want a 'zombie' game I'd prefer to just go back to Left 4 Dead or some specific Resident Evils and I'm content with that, to be honest.