Thanks for playing!
Fun fact: you're the first person to have mentioned the dynamic music so far. It was a last minute addition, so I didn't think it would get much of a spotlight, but I'm surprised that it took this long for someone to mention it.
In the settings, I did add a turn indicator that tells you when it's your turn (not sure if it helped you) in case people couldn't use the screen flashing for whatever reason. But as you mentioned, it only tells you the state of the current turn, and something like a slider moving back and forth between two states that visually tells you how much time you have left until the turn switches would have been better.
As for the controls, I do think limiting the speed for mouse move would have been the best option. I liked the mouse move because it allowed you to change between moving quickly and moving precisely on a dime. While I was aware of how easily you could cross the entire map in a single swipe, I wasn't sure how to fix it (I thought of slowing it down but I still wanted the sensitivity to be configurable). In hindsight, I'm not sure why I didn't think to just set a speed cal on the mouse move, because that's a really obvious solution.
It's funny that you mention the win state being similar to the lose state, because they actually use the same menu and functions (guilty as charged!). I made it so that everything stops when you lose (including the music) because I wanted it to be super unsatisfying. But I wasn't sure what to do for the win state, so I just made it do the same thing but changed the sound effect and let everything keep playing. Perhaps a more animated menu or some confetti might have done the trick?