Anniversary Collection Arcade Classics: any way to mod other regional version ROMs into the game?

[azul120]

Since Konami dropped the ball and only included the respective regional version of each game (sans Twinbee, which was unreleased outside Japan in the arcades) for the collection, which means nerfed Thunder Cross among other things, has anyone here looked into hacking around the binaries in the Steam version of the Anniversary Collection? Would buy the Japanese if not for the region lock.