I’d honestly bring up Stark but then again I guess Dr. Strange is a bit more arrogant and quippy given their encounter with each other. Stark seems to back down when it comes to Pepper as well. I’m honestly surprised at the idea Night Nurse is returning she seems like she’d be a bit out of place in a movie like Multiverse of Madness. I like the idea of the character because you could tell before Dr. Strange was on his journey to becoming a better person she had faith or atleast hope that he could be. She’s a bit of that reminder of that journey and what he lost to get to that point as well given she was a nurse in the hospital he worked in. I’d think that it’s possible with who Strange is now a possible relationship could work if they went that route.
They could always skim over that whole Sorcerer Supreme duty of Strange deciding to be alone. They practically have him jumping around in the comics. Or it could be one of those things where he simply doesn’t have a love interest he sticks with in the film. He’d probably be the first male character without a potential love interest if they go that route. I honestly find it interesting that in the MCU he met Night Nurse before he did Clea which in the comics I believe it was visa versa? So I’d be surprised if Christine is returning and it didn’t go that route. I’d imagine there’d be some type of chemical tension between Strange and both women however though. Christine maybe spinning off into a Disney Plus show and Clea possibly becoming a fan favorite and getting all the love that comes with it. Mini Series possibly more.