Depends on whether they learn anything from having the non-lickspittle critics pan their movie for being unengaging due to the massive lack of challenge, the weird aloofness of the protagonist and general lack of effort.
A sequel needs either a problem she cannot punch into submission, frustrating her limitless strength. Or it needs a villain that actually challenges her. Ideally both.
If you make Carol into a simple brute complacent in her power (which would at least allow Brie to act out SOME emotion for once), then she will need a charismatic adversary who teases her into being better than she is.
If you make her a righteous hero, she will need a villain to challenge her morality as a twisted mirror image.
In any case Moonstone is a pretty good choice. Being smarter than Carol is probably a good point to start villain shopping. Being vindictive and jealous makes it personal. Also please no man who tells her to smile or some shit.
That just doesn't work for a planet wrecking hero. She doesn’t work fucking retail!
It's also the lowest of the bad feminist points to make.
Catty retorts and pet-peeves just do not amount to being a galactic superhero.
Imagine anyone had suggested BP to cruise completely on racism of low expectations and made T'Challa so small a man as to get insecure about European colonisation of African countries his people never gave a fuck about, either.
The allure of Wakanda is that it's confident in its own capabilities and proud of its heritage. Talking back to the USA and being unafraid is statement enough.
Carol can certainly explore some stuff thematically, but rolling her eyes at men and scoring points for "Yas Queen Slaaay!" really should be beneath anyone who holds photon blasts and breathes hard vacuum.