I have a big collection of my favorite SMB Hacks and it would be so awesome if one could patch all these hacks with the Two Player Hack.
For example: If I would like to play "Extra Mario Bros." in co-op mode, what do I do?
Truth is... the best that I, or any general trial-and-error hacker, can do, is to learn exactly how the level and sprite data are arranged in the original SMB. Then, assuming that all of the raw level and sprite data in SMB2P Mod is exactly the same as the original SMB, simply put those changes in their new locations. For example, if the original walking Mario frame one sprite hex data is:
00, 01, 02, 03, 04, 05, 06, 07
then I would need to find where that string is in the SMB2p MOD using a hex editor.
If we wanted to mod 2p mods where we can simply have a rom with 2 patches, it would have to be a lot of legwork by the developers. I'm willing to bet my job that won't happen.
Sorry this post is in the morgue.... my job goes into huge upswings of activity and its hard for me to make time for this... I will make updates to the original post when I can. Please forgive if this is classified as an unnecessary bump.