Why is this difficult?
Ultimate Nick Fury is black and looks identical to Sam Jackson.
There are themes from the ultimate universe in all of Marvel's movies.
Plus, people love Sam Jackson.
It isn't difficult at all.
Marvel got Jackson's permission to use his likeness in the comics. Revisionism with lamer versions than the original.
Sam did a coupla cool roles 20 years ago. Everything since is the same ol' same ol' Sam. Tired and overdone. Why do people love that?