I haven't read the comics, so I've no idea how much of this show is in line with those or how hard its diverted.
- It felt like they had enough story material for half a season and then stretched it out
-No real antagonist besides "world is ending" ball once the Umbrella vs. Sparrow is resolved.
- Whole season trying to point fingers at Reginald being the bad guy only to divert expectations.
- Having the kid from last season be the catalyst for the changed timeline came off as shit imo, and the 'payoff' for that was just Allison being more pissed off and the convenience of not having to start with "I heard a rumor", which didn't matter in the end since it didn't work the one time she needed it to.
- Viktor being taught to hear/feel stuff for it to only be used just for the kugelblitz, for it to not matter in the end. That character and whole subplot could have been axed.
- Don't understand why Ben's mother was left alive of the Umbrella group. I figure if the kid was able to feel their parents through the connection he had with Vik, it'd have hit up Ben's as well even though he wasn't present at all for him to know his existence.
- 5's whole development/foreshadowing is up in the air and feels like we got blue balled. Also that no one ever wants to listen/believe the 60ish year old despite him having done a good chunk of the work in prior series. Future-visit/Tattoo sideplot could have been tossed away.
- Shut the fuck up Allison & Vik
- All of the awkward scenes involving Vanya->Viktor that felt hamfisted into the script at the last second and no one questioning it other than Luther, just for him to be told to stfu by Diego, who would have been the last person to have done that, unless he was afraid it'd cause Vik to turn into an emotional bomb again.
- The visual design for the world at the end makes no sense. Just a floating 3-4 blocks of land hovering in fiery looking space. There'd have been no oxygen/gravity.
- Majority of the season taking place within the Academy/Hotel got old pretty quick.
- The 'Guardians' just being shoguns felt cheap. Those fights in general were lacking. Probably blew what little fight-scene budget they had in the Academy fight early on.
- Sloane not being at the end despite alternate-timeline Ben being there in addition to what was probably Umbrella's Ben in the credits sequence
- All that time Reginald spent on getting Klaus familiar with his powers only to kill him off in the end instead of say, helping with the Oblivion puzzle.
- My assumption is Allison's powers were spared, having been the only one that wasn't used as a battery for the machine, but why would Reginald want her to be untouched of the 8 in the room? He presumably didn't plan for Klaus somehow managing to resurrect his suicided corpse into the other dimension (and that wasn't even explained either), so she would have been part of the 7 minimum needed to make the rewritten timeline to occur.
- Reginald's wife being dead in both timelines, but only the original timeline he decided to send an Academy member up to the moon for years on a false mission, just so they're there to act as a potential watchdog who wasn't even in the vicinity of the station that had her sealed remains. How he required regular humans to build a hotel vs. the logistics of building a station on the moon decades later without anyone detecting it is beyond me. Most you could chalk it up to is "he's an alien w/ assets",