I know about that but I don't see any use for that kind of thing where a new Bleem!cast pack would have made some sense and even now would still got a lot of fans that would buy them for certain games.
A N64 game however still looks best on a N64 and those are incredibly cheap, you'll be able to play them on Nintendo Revolution too, I got Zelda OoT for N64 & GameCube, a good amount of N64 games will be ported to Nintendo DS ...
There's no good PCEngine or MSX emulator for DC and honestly it doesn't look like there will be updates for those at least within the next few months, why should someone attempt a N64 emu ?