I think a nice solution would be to have an unofficial Android emulator that runs as an app and loads roms like the NES and SNES emulators on WP. It wouldn't be heavy duty, but for the people above who want to run a game or two or me (I want to run a Wi-fi calling app on a European carrier that will never develop a WP app) it would be great to have something to fill in the small gap while still remaining loyal to WP. As for viruses, my concept wouldn't actually RUN the OS, but would emulate its functionality when executing apps. Considering some of the things that have been done on WP, I don't see why a developer working in the homebrew market couldn't figure this out. A developer named Julien Shapps came out with a working notification system back in 2011 when WP7 was new and integrated it with his homebrew. Of course this is warranty-voiding work, but honestly for those who are willing to take the risk and just want the little bit of extra compatibility, I think it would be a hit.