Surely if you want something inspirational and uniquely Villa "Do you want to bet against us?" is the one.Probably about as close as a homage to the great man adorning one of the stands as we're likely to get too.
Also just for clarity, who is the "we" and "them" in this group of ppl that you are representing in this project?
How about something along the lines of images of a selection of our most memorable shirts from when we were formed up until now in a row next to each other ending in something like "Prepared Since 1874"