Stephen Strange has never been a conventional man.
His look is unconventionally and Elfish. Christine constantly teased that he looked like an overgrown otter so he wouldn't be too full of himself.
He didn't like the conventional methods of surgeries so he invented better methods. He believes things could always be improved upon.
That was the reason he believed there should be a cure for his hands even it was not by any conventional means. His ex-colleagues shook their heads and thought that a reasonable doctor like him should've known better.
His methods of learning magic are definitely unconventional even by Kamar-Taj's standards. Nobody but him would think of using astral projection for more study time. If he only knew how to astral project during his medical school, he would have cut his study time even more than he already had.
Kaecillius was taken by surprise by his enthusiasm and unconventional method of fighting. He was holding himself well for a newbie.
The way his astral form ordered Christine around while she was performing surgery on his corporeal form was definitely not conventional for a doctor or even for a sorcerer—the fact alone that he is both is unprecedented.
Nobody but Stephen Strange would've thought of using the combination of the Time Stone, bargaining, and self-sacrifice to beat Dormammu. He also didn't like the destruction that usually followed after attempts at world domination so he had to undo it. Any parties who clean up the mess after world domination attempts definitely wish more superheroes are like Doctor Stephen Strange.
Stephen Strange's powers, wit, flexibility, and unconventional methods certainly make him a formidable ally or opponent.
Notes:
-I think I have listed why I love this movie and Stephen Strange in this chapter :) The movie and the character is definitely unconventional.
-Benedict himself said that he looked like an otter so I joked about it. It's here youtu dot be/QO5VxVDmsG4 (Thanks PetuliaGristle from AO3!) It's by no means an insult to his look.
-I enjoyed writing this chapter about more BAMF!Stephen. I hope you enjoy reading it.