This was a bit difficult because Superman has a set image in my mind. It seems if you go too far with the design it doesnt look like Superman at all. On the other hand you have to really change Batman so he looks different.
In the end I just decided to keep it simple (there's a blue boyscout version I'm holding onto)
So the one on the left is an attempt to modernize while keeping the trunks/overwear
The right side is the run of the mill trunkless redesign - basically what I did for Skratchjams but with different colours and angular lines.
I messed up that left hand bad