I hope Kit is actually given some sway over the design of the costume if he gets one.
He wore outfits for years evoking a fantasy medieval warrior society so he's got some experience in what is comfortable, looks good and comes across as "authentic" I think, to a degree.
Here is what I am hoping doesn't happen... That this actually ends up being akin to Renner showing up in the first Thor film. Sure, Dane shows up for a scene but ultimately it's just a moment in the movie to establish a future Avenger as merely existing in the MCU.
On the other hand... It is an Eternal film. A mythos that already in being adapted has a lot of plates to keep spinning. Should I really expect a reasonable chunk of this movie to be concerned with Dane's background and origin?
This keeps occuring to me. I want the Black Knight in the MCU and this excites me but now I'm realizing he is gonna likely just be tease here for use further down the line.