I'd love to have at least one example, what people should expect.
Its amazing that you are asking around on these forums. Hell, I'd even apply myself but I don't really know what I am supposed to create.
Also, Google "Gaming Banner". Change the Google search to display Images. That is a good idea of what is needed, in addition to the links provided above.
* One of our current projects is reducing our website to a single "Coming Soon" page. We have an idea for an image that we would like to use as the background, and it will involve the design of some HoN characters as well as the use of our logo, etc. *
The best way to get an idea of what we are looking for would be to contact me so we can discuss the short and long term projects in depth.