Still believe it will end up being Michael B Jordan brought back somehow.
The character has or had the royal bloodline in him. The actor has extensively worked with Coogler before. He's the only actor from the first film that has actually and truly carried a film or film franchise by themselves. He's done enough action type films to do the physicality of the role. Lots of women like the way he looks ( that's just how it works...)
( I'm not sure Angela Bassett in Strange Days counts , but that was a great sleeper film)
So it defies the suspension of disbelief when you have a 90 pound woman body slamming 250 pound special forces commandos. I'm not opposed to diverse characters in films, but it breaks immersion when that stuff keeps happening. The CW had one truly grim show, The 100, where Marie Avgeropoulos just went around fighting guys two and a half times her size and was beating them down on the regular.
With Black Widow, at least the Russos, Favreau and Whedon focused on Romanoff's speed, creativity and cleverness.