I have a suggestions here to make the grind less button spammy. Maybe you can make it so when you press [Shift + Enter/Space] a slider would appear to chose how many hours you want to spend grinding. I know the point of the game is to grind and I'm for it, but spamming enter/space is kinda annoying tbh. If you added that slider, you can just do how every many hours you want all at once.