Thank you very much for your feedback!
Clearly the simultaneous boardgame / dialogues would need some work to play well, including that speed issue you mentioned. If we kept working on the game, we could both make text speed a parameter (like it's usually done in visual novels), and adjust the time each line stays onscreen to its length. We don't have plans to develop the game further at the moment, but it's still interesting to think about possible improvements!