This is a great mod. One flaw I've noticed though is that if you are using ice crystals to maintain a cold room (e.g. on a neolithic play through), it's too easy to miss when they expire and let all your meat rot. It would be nice to have any of the following:
-A notification when a crystal expires
-A countdown to expiration displayed when you click the crystal
-An option to auto-renew the crystal cast