I’m guessing the reason they weren’t invited is that executives are now used to 100+ developer teams producing games. So the idea of bringing them back together for a rerelease probably is dismissed on first thought. But it turns out Goldeneye is from the era of smaller teams and though they’ve all moved on, they’re apparently still around and willing to come back, if only someone had asked them?
I wonder why they couldn’t use the abandoned Live Arcade project. Probably some kind of rights issue.