I would like to see a shout out to the classic Superman costume...it's not hard to work into the story - Super is fighting some big bad whose death rays fry his costume(except maybe the cape) and knock him out near a circus. When Superman comes to he has to grab some tights from the friendly circus folk and head back into battle. Sounds a bit silly, but I'm sure professional writers can come up with something better ( although after seeing B v S and JL, maybe not).
A similar story point could have us see him in the t-shirt, jeans and boots look , which also works.
Regardless, it would be great to see Superman in a couple of different uniforms.
Why JL passed up the chance to show him in a black super suit I'll never know, they'd have made millions on the toy sale alone.
CW Superman looked awesome in the black suit.