Hey Guys!
Ok... after this idea was proposed I decided to run with it as I liked it very much.
I made a quick template to use and though not the greatest, it works for what I need it for.
I made the covers the way they are for the following reasons:1) I didn't want to have to create brand new covers as I have a lot of NES games... I also didn't want to wait while covers slowly trickled onto the site (I managed to make 155 cases in a very short amount of time).
2) It's easier to get the PolyCases (for me anyway) than UGC at this point... I haven't personally had any issues with the quality or breakage.
3) The covers that I made are created by editing any available UGC covers (with the custom NES spine) on the site as the dimensions are perfect, so basically I can create a new PolyCase cover as soon as a UGC cover is made available.
4) You can change the current banner I made to any that you want by just editing the banner.
Here is a sample of what the covers look like:

If you want to use them... go for it.. if not, then don't.

Here is the complete selection of covers for download:
http://www.mediafire.com/?umab8p34cpt9v