if no-intro naming rules are being followed, shouldn't demo discs be done like this?:
Game Name (Demo)
Game Name (Europe) (Demo Version)
Game Name (Europe) (Trial Edition)
Game Name (Europe) (Taikenban)
Game Name Demo (Europe)
i.e. ignoring whatever way the on-disc/on-box text calls the demo, and just giving it the generic label "demo"
and optionally an extra "kiosk" label, like no-intro does.
e.g. Game Name (Demo) (Kiosk)
or maybe Game Name (Kiosk Demo) or Game Name (Demo, Kiosk) instead