CBR posted this and I think it looks pretty good. Could use more color in the boots, though. It was the costume for Superman for the now defunct Justice League Mortal:
https://www.instagram.com/p/Buq_hAOg...medium=loading
It looks like they planned to abandon the trunks and boots well before 2011. Here's the original article:
https://www.cbr.com/batman-superman-...l-concept-art/