Figured I'd throw this out there to which I'd like to point out this is purely an idea and nothing more.
But recently I've been running through deviantart and found some amazing pictures of Marvel's The Avengers with a medieval theme to their character design.
http://thedurrrrian.deviantart.com/gallery/#/d55tn2d (http://thedurrrrian.deviantart.com/gallery/#/d55tn2d) - Ironman
http://thedurrrrian.deviantart.com/gallery/#/d55bw1h (http://thedurrrrian.deviantart.com/gallery/#/d55bw1h) - Thor
http://thedurrrrian.deviantart.com/gallery/#/d551qvz (http://thedurrrrian.deviantart.com/gallery/#/d551qvz) - Nick Fury
http://thedurrrrian.deviantart.com/gallery/#/d54t4vy (http://thedurrrrian.deviantart.com/gallery/#/d54t4vy) - Black Widow
http://thedurrrrian.deviantart.com/gallery/?offset=24#/d54jiwr (http://thedurrrrian.deviantart.com/gallery/?offset=24#/d54jiwr) - Haweye
http://thedurrrrian.deviantart.com/gallery/?offset=24#/d53ch2c (http://thedurrrrian.deviantart.com/gallery/?offset=24#/d53ch2c) - Captain America
http://thedurrrrian.deviantart.com/gallery/?offset=24#/d53tnk5 (http://thedurrrrian.deviantart.com/gallery/?offset=24#/d53tnk5) - Hulk
http://thedurrrrian.deviantart.com/gallery/?offset=24#/d52yvub (http://thedurrrrian.deviantart.com/gallery/?offset=24#/d52yvub) - Loki
So what does everyone think? Seem like an interesting group cosplay project?