I did go back successfully and have been playing a bit here and there since. Its boring though so I have decided to think about completing my terraforming. At first I was going for closed off like Shutter Island and keeping all my villagers in one place as prisoners because I hated running around looking for them, but now that I have all reactions and winter is coming, I'm thinking make a main street and throw all the villagers into some mountains... my original plan before hating on the game lol
I had gathered a bunch of skeletons, fossils and rocks to decorate the sheer cliffs too. Oh well.