I like his old costume. Its a classic, and I don't need my superheroes to look "realistic". I'm watching a guy fly around punching aliens/robots/villains and defending the Earth. I am not bothered at all by his trunks. That said, I can stand them not being there. Its the personality of the MoS (and new 52) versions of Superman that makes me dislike them, not the costumes (although the MoS costume's texture is pretty weird, it's not really bad). When it comes to costumes I'm just glad that, trunks or not, Affleck's costume seems more Batman-like than Bale's costume did. We've seen one pic, but it still looks like its captured Batman's look pretty well. It will be...interesting to see if Gadot gets a costume.