Yeah. The issue with the monsters is how soon they spawn. I had the spawn rate a little higher in the beginning due to testing, but forgot to readjust before submitting. For the miners, the issue there is prioritization and path finding. Sadly the "Fog of War" took way longer to implement that it ate up so much dev time. I love the feedback and hopefully I can keep these concepts in my head for the next game I develop.
My last game was lacking the fun factor, so I did my best to focus more on playability this time, and I think it was achieved. I will make sure to create a good balance b between everything next time.