Wow, awesome. You're right with the fact that the sanity icon didn't fit with the others. I didn't know what to do, so I grab a steve head and added some exclamation points on top of it. But anyways, thank you very much! I will try some of these out on the weekend.
About sanity itself... you can increase sanity by eating "happy" food like cookies and sleeping, from the top of my head. There should be a couple more options listed on the little wiki on the GitHub. I do plan on expanding sanity when I get to expanding ghost mode.
Thanks for the info! Now I can turn sanity back on XD
But for real there is a lot of cool potential here. Did you plan on updating some other Enviromine features into this mod as well, such as earthquakes, land slides, or cave gas/fires?