Don't know about that. I sensed something strange in my spine whilst reading the dialogue of the final scene... I think they are planning a sequence. If that is true, it would be important to maintain Kim alive - because they knew he would be a fan favourite.
They definitely have plans for sequels. Disco Elysium is written as the opening for a much bigger game. They talked about this when I first went to seem them in 2017. They even have a name for it which may ring a bell if you've finished this one: The Return. (Of what? The King? The Commune? On investment? Views differ...)
The other thing is, this is an entire world they've built. It has rooms for lots of different types of games. They could totally do an RTS set during the Franconigerian century, or a swords-and-sandals thing in the Perikarnassian, or any of a number of other things. Ideas is one thing they are not short on. They just need to find more oligarchs to give them the monies.