The way I understand it is, bootmii lets you backup your whole system, menu and everything, I think preloader does this too but I'm not sure.
Now that backup could be used with the PC Emulator/Virtual Machine so people could test how certain things would work on their setup without actually putting their systems at risk.
This emulator shouldn't be running games, just be a fully functional system menu, ios's and everything, basically the user makes an image of their Wii's internal memory and mounts that image to the emulator/VM in a form of an ISO and tests things without actually putting their system at risk, it could also be useful for more knowledgeable people to fix other people's systems if it's a software problem and something that could be fixed but requires more advanced knowledge of things.
Think VMWare but for the Wii
Now that backup could be used with the PC Emulator/Virtual Machine so people could test how certain things would work on their setup without actually putting their systems at risk.
This emulator shouldn't be running games, just be a fully functional system menu, ios's and everything, basically the user makes an image of their Wii's internal memory and mounts that image to the emulator/VM in a form of an ISO and tests things without actually putting their system at risk, it could also be useful for more knowledgeable people to fix other people's systems if it's a software problem and something that could be fixed but requires more advanced knowledge of things.
Think VMWare but for the Wii