My girlfriend and I just finished season 2 of Sens8. It was... something. We didn't find out until after finishing season 2 that the "finale" as Netflix shows it, was actually a concluding episode release a year or two after season 2. It wasn't especially obvious, since the penultimate episode ends on a cliffhanger that feels like it's building up to a season finale, when in fact it was meant to be a cliffhanger for the season I suppose.
Anyway, that aside, we have... many issues with how things turned out.
The ending is ridiculously happy. Like, literally everything ends up as happy as possible - everything works out for everyone, everyone recovers from their fatal gunshot wounds, everyone ends up with a romantic partner, Kala never has to actually choose between Wolfgang and Rajan, they're both just like "threesome is fine" - and speaking of which, why was she bought back from flatline with A BLOODY TASER? Even with defibrillation that obviously doesn't work - the clue is kinda in the name, it stops fibrillation, it doesn't start a flatlined heart. And a taser is even dumber. We both agreed that if Kala had died at that point, it would have made the end of the series a lot more potent.
Regardless, the series left with a lot of unresolved plot:
Will's whole plotline of seeing Sara is never really resolved. It got built up a bit early in season 2 and then kinda disappeared.
Reily... I think mostly was resolved. Reily honestly mostly becomes Will's sidekick for most of season 2, only occasionally doing things independently of him.
With Kala, well there's the above issues but also, Rajan's whole investigation and fearing for his life are never concluded in any way.
Capheus's political success or failure is never mentioned. Also, everything relating to his mothers relationship with Silas, everything to do with Githu and the Superpower, and even the extra sensates Capheus sees like one time and then never again.
Wolfgang mostly gets tied up, except for Lila and her cluster (though that affects everyone).
Sun's plot end is stupid. Yeah we'll pardon her for embezzlement, and while we're at it, we can forgive the attempted murder, the (presumably) manslaughter for others involved, the huge amounts of damage caused by dangerous driving in a high speed chase, identity fraud and everything else. And Sun not disposing of a burner phone is beyond stupid. Nomi even mentioned that she knew she had to dispose of it.
Nomi and Amanita's wedding was incredibly cheesy. Nomi's mother suddenly accepting Nomi is completely out of character for her (if her dad had built up to it a little I'd have bought it, given he did call Nomi his daughter in season 2), and just further drives home the point that it's absurdly happy as an ending.
Lito's film status is clearly in jepoardy during the finale, but I guess the implication is that it worked out?
Anyway, the finale also started introducing new concepts that it never really explained further. Presumably things they wanted to bring in for season 3 but shoehorned in now they knew it was ending. Which is weird, you'd think they'd be more focused on tying up loose ends and delivering a full final story, not suddenly opening a new mystery.
Considering the above, and how much they did leave unresolved, we thought they might still be vying for a third series, or at least giving themselves a plot threads they could use to go forward, while neatly wrapping up the big main things. But it was such a weird mixture of "let's rush this thing through in 30 seconds because everything is ending" (Sun being absolved, shutting down everything bad with BPO etc." and "let's open this new thing because everything might not be ending" like the Lacuna.
As you can probably tell, we found the end a little unsatisfying. Sens8 overall had a lot going for it, but a lot going against it. It was far too fond of overly long montage scenes (many sexual), heck it even ended on one, and there are so many unresolved plot points. Plus it suffers pretty badly from good guys who are seemingly invulnerable and unreasonably skilled at many things, though that's moderately common I suppose. But the stories were mostly well written and engaging, the characters interesting and way characters stories come together was well written. The action sequences are somewhat ridiculous at times but thrilling to watch at least.
Overall, if you're considering watching it... maybe. It wasn't a masterpiece by any stretch, but it was entertaining enough. Just make sure you're ready for a lot of sex, a few bad tv tropes and some plotlines to just fade into the background and not be resolved.