I didn't mean using heroes and logos as game icons. I meant being able to use heroes as a dynamic background on custom themes for example.Uh. I'm not sure how you thought that will work. The image does not set the size of your game icon. The theme does. Adding a wide-screen image (hero) or logos (which are often transparent) won't work. Also, there are restrictions in filesize, mimetype and resolution that have to be met.
Unless you have a direct plan how to successfully implement it, it probably won't happen. Sorry