Thank you for your very detailed feedback. I'll take it into account.
>I haven't figured out how to use potion of chaos.
No one had. It's just for fun. But accessing the locked recipes is one way it can be useful.
I've noticed another problem: with the toggle resource display option, it's difficult to tell whether you had it toggled on or off, when there is no resource in sight. This could cause confusion when the player enters a new area, when there is resource but he turned it off.
I think there should be a small icon that shows whether the resource display is turned on. This icon should have a tooltip to let the player know what it does.