If I always agree with you, and never find fault with you, will you stop calling me a whiner, or is there some other way? For your webducation, 
Shipping is the practice of supporting to the point of campaigning for an otherwise non-existent fictional couple. It's less 'they'll probably put these people together' and more of 'I have an idea: they should put these two people together!' It can be annoying if taken to excess, and usually finds its power in the assembly of groups of like-minded shippers, so when you see a hug between your two favorites, there's a bunch of people to say "Yeah, I saw it too... they're totally boinking!"
Regardless, I don't mind talking about how bad such a limited crossover of otherwise unrelated properties could be, but I'd rather talk about a relationship that would occur within her film, as opposed to not giving her a romantic arc in her film in order to accommodate another film's romantic arc.
Heck, make it Simon Williams!
I personally would rather play out the whole thing with Mar-Vell and after he dies she's on that 'never love again' stuff. And while doing the role reversal at the beginning of the film is nice, I'd much more enjoy the role reversal at the end, after being earned.