Rocco, although I have very little, and know very little about, S Gauge, I think your ideas have a lot of merit. It makes sense to me that surveys showing much interest in particular S Gauge models could motivate manufacturers to produce such models.
IMO, S Gauge is a great size for model railroading: not too big and not too small, arguably just right. Also, Postwar AF S Gauge trains and accessories have great charm. I'm excited about having a 2nd layout that will be S Gauge in a spare room at my house, where I have a substantial O Gauge layout and collection in my basement.
Model railroaders with large O Gauge layouts could add S Gauge to achieve forced perspective. Arnold