For the most part, his appearances have been small, blink-and-you-miss-it moments that often don’t even cross over with the main hero — with a notable exception in Thor: Ragnarok, in which Stan Lee’s character gives Thor Odinson (Chris Hemsworth) his new haircut.
If Stan Lee’s wish had been granted, and he had been afforded the opportunity actually to face off against Black Panther in a fist fight, then it would arguably be the most active that the Marvel icon has been in a Marvel movie in terms of directly affecting the protagonist.
A fight scene would definitely be new territory for Lee, but if something like that were to happen, I wouldn’t be shocked if some fans were excited to see something wild like that go down.