I think, if anything, the N64's appeal is grossly over-estimated. Unless you live in North America, N64 has pretty much zero nostalgic appeal, since it was so poorly received in Europe and Japan. And even North Americans don't remember it with the same universal fondness as the NES or SNES, so their ability to sell them greatly diminishes. GameCube has a similar problem. Selling minis past the SNES era is extremely dicey. And this is without mentioning that the main reasons people would want to reminisce about the N64 wouldn't be there.