The original pitch for Disco Elysium, for Harry, for Martinaise, its people and the humiliated city-state of Revachol, was as a ''match-book world'', a short(lol) detective game, meant to be a small window at more to come, they had built Disco Elysium as an introduction to its massive universe, for future games and works to come.

It's abundantly clear that that's not happening anymore, but Elysium was always meant to become a franchise of some sort.

edit: i can't seem to find it right now but if i recall correctly, Kurvitz already had an idea for a DE sequel, it was going to be about a pregnant woman, but i don't remember the details.