I just want a hot, middle-aged, relatively thin, greying man who's erudite for Reed. Everything else is optional. Finding one who isn't already in the MCU is tricky...In the comics the characters have looked a certain way since 1961. They may act the same, no matter what they look like. But changing their race or sex will change their outer appearance. Therefore it wouldn't be true to their comic origins.
I didn't even like Jessica Alba and Michael Chiklis in the 1st big budget version. Because they both didn't fit the characters. One was obviously wearing a blonde wig and contacts and the other was way too short.
Joseph Gordon-Levitt, Ryan Gosling, Krasinski, Denzel Washington, Aaron Eckhart