The rights entanglement that is GoldenEye 007 really is unprecedented, but I still maintain that the odds for an official release of the XBLA version are better than ever. While we don't have any true insight into their relationship outside of the inclusion of Banjo and Steve in Smash, Nintendo and Microsoft *appear* to have a decent relationship. Plus, if you're MGM/Broccoli & Wilson (Bond rights holders), I think you'd be exploring any potential opportunities to offset the chunk of cash you're losing every month by sitting on No Time to Die.
Also, please correct me if I'm wrong, but wasn't a copy (albeit password protected) of GoldenEye 007 XBLA found in the Nintendo Gigaleak stuff?