Not really I guess you could try RetroPie or something similiar. This build relies on the LE toolchain & basesystem while SteamOS is some kind of "forked gaming Debian" AFAIK.
Yeah, I know, I meant more like a .dpkg package or something for your version of Kodi with emulators and stuff included. But might not be doable?
Not a biggie, was just a question and I can use two machines