Only a moron thinks that the trunks are not coming back. It might take ten years, but they'll be back.
In comics Superman without trunks is dead.
Superman with trunks from a parallel universe, showed up.
Superman with Trunks for some reason is not wearing trunks.
Which is weird.
The only other difference between Superman with trunks and Superman without trunks is who they are in love with... Lois Lane's husband Superman with Trunks is alive, and Wonder Woman's boyfriend Superman without trunks is dead.
Rolling back the character to pre-new 52, should have been the perfect opportunity to bring back the trunks, to reclaim the loss in sales they had been feeling since all their books started to suck, because they haven't quite figured out that we don't want a cooler hip Superman: We like, nay, LOVE laughing at his stupid trunks.