Idea: Adding a stub Wayland compositor to Sunshine and a session manager. Allow it to launch nested Wayland compositors (Mutter, KWin and wlroots compositors all support this), allowing it to be used as a full, accelerated terminal server.
Probably just use wlroots as the backend... Maybe allow logins to the "main" display as well in the current fashion? Or if using wlroots it might be able to run in a completely headless mode, you'd have to configure the fake display somehow... This might actually be a worthwhile thing to investigate...
