Do you think it would be possible to get around these Publishing Legalities, if instead of porting the original Mass Effect, they do a remake? Kinda like MGS. Sony has the publishing rights to MGS1, yet the game was still released as a remake on Nintendo's Gamecube, with the added subtitle Twin Snakes.
I'm not talking about making a night and day difference, but adding some new paint, a subtitle, some stuff that wasn't in the original game and maybe tweaked scenes and it could pass as a remake and essentially new game.