Well, in NES Remix 2 for Wii U, there's a bonus game Super Luigi Bros. which is both used in remix stages and in a standalone game. In the 3DS port, though, there is instead Speed Mario Bros. - a sped up version of Mario 1. What I propose is this - there are still remix stages in the 3DS version that use Super Luigi Bros. version of SMB1. Perhaps the patch file can be moved from those remixes (or maybe even the Wii U version of the game?) and replace the patch used in Speed Mario Bros. to allow people to play Super Luigi Bros. on 3DS?