I mean, while Man-Thing is a semi-pretenatural being & he doesn't mind killing & the Midnight Sons are kinda made of killer & people willing to do the unethical for the greater good, it's still wouldn't fit because this team is suppose to be a group of bamfs. Man-Thing in the MCU is a sweet softy unleash it deals with monster hunters.

Marvel isn't afraid of changing the members of Midnight Suns in it's non comic universe, I'd mean Freaking Tony Stark and Steve Rogers are members of it in it's Video Game Universe. If those two can fits in that universe then I'd wouldn't mind to see Marvel try to fit Man-thing inside the MCU version of it.

That's the thing, they don't fit.

It was 80s dark urban fantasy comic team. & it's roster still reflects it's roots. Hardcore edge lords who are studs. Adding a cinnamon roll to that makes it a little dumb. Not every group needs to be jokey & sweet. It's like making a Doom game & making it comedic.

Again you're missing the point that the MCU and Marvel in general has and will change their teams in other universes. The OG6 MCU Avengers wasn't the same team it was in the comics and was better for it. The MCU Guardians are a much better team then most of the Comics Guardians. I will keep on saying this THE MCU IS NOT 616 MARVEL AND NEVER HAS BEEN.

But them they're making things repetitive if they're just gonna make "Guardians of the Galaxy: Supernatural Edition". Werewolf Midnight wasn't some circus like other serious characters turned goofball. It was dark & brutal like the monster hunting world is in Marvel.

Even the MCU fancast gets it:

Save for Punisher, this is perfect.

It's not too much to ask for 1 serious group.

While Man-Thing, was a member in the comics, he acts different in the MCU already. Comics Man-Thing is basically emotionless & is more of an organic robot.

You really think that Moon Knight is going to be serious character have you seen his series? Besides The Punisher is probably going to be on the Defenders (You know the actual "Serious Group" in the mcu) and Strange is going to be a Avenger. That leave the door opens to Werewolf by Night and Man-Thing to join the Midnight Sons/Suns.

There's a difference between a few quips & being the laughing stock. There can be little quips that don't make the Midnight Suns into Love & Thunder. Moon Knight was a series show with some quips. It's possible. & Like I said, they made Man-Thing into a basically a giant softy that would problaby be needed to be told to do everything. If you look at the past members & current memebers of the Midnight Son, you'll see this aint one of those teams. Everyone generally knows what to do & how to do it, they just need to synch with everyone else.