^Tom Cruise already IS a comic book character all on his own.
Anyway, my main takeaway is that if they're going to tip Stewart appearing as Professor Xavier in the damn trailer then they must have something WAY more surprising up their sleeves.
Yeah - with Cruise i could see a blink and you'll miss it cameo but Stewart's Professor X is a cornerstone of Marvel movies, just not yet in the MCU. If that was indeed Patrick Stewart as Prof. X it could be the first brick laid down on the road to X-Men and Mutants in general.
Wouldn't put it past Marvel and Feige, it's how they operate. They start slow and drop hints, then itÄs one big blowout appearance before they go all in and with full force. If the Illuminati will be a plot element there could be even more surprises that the trailers don't reveal such as Reed Richards, which in turn would make Strange 2 even more so a pivotal movie of the multiverse story arc.