Thanks so much for trying it, and for your kind words! I personally like playing co-op even by myself. One character can go exploring while the other character stays behind to work the farm and protect the baby from the eyespiders.
I experimented with different lengths for the day/night cycle, but in the end I stuck with a very short cycle because there isn't too much to do during a day, but you need a certain number of days to grow your crops. This is definitely something that would require very serious experimentation in a commercial ganr.