I have enjoyed all the episodes so far, but I am starting to feel the same problem I have had with the comic book series of the same name, and that is burn out from the whole "how many ways can we kill off all the heroes, while not affecting the main universe." And this is just from 3 episodes in a row doing this.
The problem I'm seeing with a few of them is that the point of any story is to have a character undergo a change so at the end of the story they are different than the beginning, and the point of a good what-if story is to show how different circumstances could have led to them having a
different change.
Peggy becoming a super soldier kinda changed her, but she had the exact same arc as Steve Rogers. She didn't put much of her own spin on the story of beating Hydra. The story didn't lead to a meaningfully different outcome.
T'Challa as Starlord was great and comical. It made no sense logically, but I enjoyed it. I will not complain about it.
The Nick Fury vs Hank Pym story was fairly interesting in shuffling the pieces around, and we
did get Loki winning.
The Doctor Strange story showed a different side of Strange, and the outcome was fun in a Twilight-Zone-y way. But I felt the actual descent into darkness wasn't earned with any actual story beats. Also, I just personally am pretty picky about time travel stories. I mean, c'mon, you can do illusions and time travel. It's not hard to naughty word your way out of a fixed point in time by tricking your past self. But I digress.
The Zombies storyline focused on . . . a variety of characters, and none of them really had an arc. Stuff happened, but that's all it came to.
And Killmonger ended up in almost the exact same place he did in Black Panther, except he wins. But he as a person isn't any different. (And it's dumb for the US to attack Wakanda with robots, and for Wakanda to fight back in melee. People! Use missiles!)
So of these six, #1 and 6 basically didn't change how the story turned out. #3 and 5 had too many characters, so the arcs weren't compelling, even if the mystery or spectacle was neat. #2 was a comedy, and actually
was interesting because it gave T'Challa an arc to go back to his people. And #4 showed us a character's darkest side, but I don't think his slip into darkness was really earned.
These episodes mostly don't give us a good character arc. They give us spectacle. And that's missing the point.