i dont know if you feel up to adding all of the SNES "major variants" aka license code variants ( -1 -2 and -3 at the end of license codes), but if you do, i have a running thread with the list:
http://www.nintendoage.com/forum/...
i also have a custom collection made with them, as well as NES carts that have -1, -2 and -3's, some of which arent listed as "major variants" in the NES database.
http://www.nintendoage.com/index....
also, for some strange reason License Codes dont show up in collections. they're just blank on the list, but when you click on the individual titles they show up on that page.