MCU Continues its Downward Spiral with Ragnarok
I think the movie looks very disappointing. It continues the trend of the MCU being obsessed with team-ups and crossovers. That only hampers the development of the main character and ESPECIALLY of their supporting casts. The greatest and most likable superheroes, Superman and Spider-Man, have very strong supporting casts, mostly of non-super civilians.
Marvel Team-Up was the old comic book that teamed up Spidey with a different hero in every issue. It was cancelled after 150 issues even while Spidey's two solo titles continued running for years. Eventually he even added on MORE solo titles. Real comic book fans were not attracted to the shallow stories offered in the team-up books. The MCU is now telling us that after each hero gets a solo origin movie, they are unable to conceive of anything but team-up movies. They're getting lazy and it's getting boring. It's very easy to slap two superheroes together and have them trade one-liners with each other. It's harder to create a story centered around developing one character in a relatable and human way.
On top of that, this "going for the comedy" angle only works when your movies are actually funny. Even their Ant-Man movie, the most comedically conceived one of them all, had very few actual laughs in it. Comedy in action-adventure movies works best when it is used sparingly and comes as a surprise in a movie that otherwise feels tense and dramatic. That's why they call it "breaking the tension." Pitching the whole movie at a light, humorous level makes the whole thing seem like a cheap sitcom. It drastically undermines the sense of tension and involvement in the story.
I will say that Marvel is casting its villains much better this year. They're going to the A-list. That's the only thing they're improving on lately.