I’m following the same line of thought as you. Hopefully they’ll come back at some point, maybe in the Spring release?I certainly hope not! While I learned to like the Sport Loops (after discovering that they look much better with the looping part on the top and not the bottom), the Woven Nylon bands are just way more elegant, especially with the thinner S4. Just today I got the Checked Midnight Blue from ebay and it‘s awesome.
But for now I‘m cautiously optimistic they will come back as the Leather Loop as well as the Modern Buckle leather bands also disappeared for a while, only to re-appear in the Fall 2018 collection of new bands.