6.5/7 is fine if you're not paying $70 for the base game. It might be worth it now the costs have come down, but paying a premium price for a mid game justifies some of the shit people gave it.
That said, I played on Game Pass, big fan of the genre, and could only make it a few hours in. Just wasn't for me. But then I really enjoyed The Outer Worlds and people shit on that too.
I've said it a few times, but I feel like they could have Dr. Doom come in to kill Kang pretty easily. It'd set up a new big bad, introduce the Fox Verse, and even set him up as the leader of any potential Battleworld in the future.
Kang even before the allegations hasn't been received all that well. A soft-reset with Doom might make people excited again. Imo all mystique of the character was already ruined in the Multiverse of Madness post-credits. A FoxVerse Vs MCU battle movie would touch on Endgame levels of hype.