I think it is interesting that so many feel that Superman's spit curl is more iconic and necessary than getting the damn costume right.
I'm also not sure how clothing a man from head to toe in textured rubber that clearly looks like textured rubber is somehow more "real world" than fabric.
The thing is, I'm all for tweaking the design. Losing the trunks, changing the belt, mute the colors, sure thing, knock yourself out. I think those are details that could be altered or dropped entirely and still have a suit that reads instantly as Superman if what remains matches his iconic look.
I think there is a fine line between "visual interest" and straight-up distracting, and the overuse of rubber and the pronounced texture sails right past that.