Oh yes, there is demand all right, going back many, many years. Much more so for the document icons than the main program icon of course, but that’s understandable. If you’re a graphic designer then by all means I’d say share your complete icon set for the program. Similar/related icons for the program and all the supported formats that are easily recognizable, look good at all sizes including tiny 16x16 onwards and so on would be really appreciated, and then the dev and we the community can give our comments. I’m sure it would be great for any designer to see his work being accepted to represent a popular program that’s used by tons of people all around the world.