Well here it is. This has all of shadow mario’s collisions. The game should also be completable with this patch. Note: this version is only 2-player.
The download includes a patcher program to reduce the download size. Patching takes about 5 minutes. What it does is decompress the image so that direct changes could be made, instead of patching over the compression. I wrote the patcher specifically for this mod, but it can be used in the future for any SMS mod.
This should work on console, including Nintendont.