Thank you for the detailed feedback! I'll definitely fix the Diplomacy bug, and I'll see if I can do something about the other points but I don't want to promise anything because there may be some technical or design limitations.
Regarding beta testers, I would appreciate a couple more. If you're interested in trying an early version of the full game, send me a key request email to lukas.osouch@gmail.com and mention you're from Itch. But I still need to do quite a bit more work on the full version, so I may take a few weeks to respond. Thank you for understanding.