Not a crazy thought at all. I've been trying to get people to make suggestions for the sorts of images they want, but not had much feedback. Perhaps as we start to get more eyes on the community posts we'll get more feedback. The ones I have had feedback on tend to be things like emotions, which require model releases for photography. Which reminds me, I wanted to look at seeing if the at community would consider drawings, cartoons etc for this area.
I hadn't thought about doing it as people making posts specifically to ask, before. It will be good to see how it goes and see what sort of response you get. Grateful for all ideas and experimenting to see what works.