Thanos as an antagonist was perfect. He was very powerful. And importantly his goal (as it developed) was simple, gain 6 thingamabobs so he could snap his fingers and kill half the universe. Easily understandable, the 6 thingamabobs made for plot devices for a bunch of different types of movies. It was simplistic incarnate. That allowed for characters, both good and bad. The relationships and struggles of the characters was what made the individual movies work so well.

I have zero idea what Kang is or what he wants or what is going on half the time. I have seen everything since Avengers Endgame/Infinity War and have an inkling of multi-verse shenanigans. But you see, multi-verse shenanigans are a problem. As a one off concept ok, they can work, but to base multiple tv shows and movies on just makes for a mess. I honestly don't know what is going on half the time, which makes investing in characters nigh on impossible. Take Season 2, who are half of these people, what do they want, what are they doing. I have no clue and I freely admit that I am missing stuff, but I am missing stuff because my brain gets distracted by all of the nonsense of the multi-verse shenanigans.

My brain literally hurts from the cognitive dissonance trying to make order out of something that is inherently irrational. And to base something as complex as the MCU was simply a disaster in the making. The root of the MCU's problems was choosing multi-verse shenanigans as the basis for multiple movies/shows. They are literally asking the viewer to do the impossible-get invested in the character's stories. You see we need the rational to relate to whether it is character or story. Multi-verse shenanigans might work for a one off show/movie where the rules are limited. But if you paid me a million dollars I couldn't explain what is going on. And that is a problem. How am I to care about, say Mobius when I can't remember who or what he is because I can't rationalize his setting.

There is absolutely no way to salvage this stuff. There is no way to get viewers invested in characters beyond the most basic things like costumes and very basic traits. I could understand and empathize with Tony Stark or Steve Rogers stories cause I could understand who they were and what their place in the story was. I can't NO LONGER explain Loki or Ant-Man as I have no idea what is going with Loki's story or what exactly is a Quantum land.

That problem is compounded with bland characters (Captain Marvel) or poor storytelling (Moon Knight) or Secret Invasion or CGI slop (Antman in Quantumania or Dr Strange's Multiverse of Madness).

Feige should scrap the whole multi-verse saga and start afresh. The street level stuff around Kingpin and DD and Spiderman and Echo has great potential. This grand scale stuff is bound to fail because multi-verse shenanigans was an incredibly bad idea to base multi movies/shows on. For me of the recent tv stuff only Echo held my interest at all and that lost it when the budget constraints were evident in the last 2 episodes. But there you had a strong character but not a Mary Sue, terrific cultural stuff, D'Onofrio was born to play the Kingpin. I don't know how you fix the movies though, but I can't see anything with the multi-verse will succeed and that may be enough to tear down the whole MCU.