@bayushi2005 - I watched the YouTube of your Observatory Prior and the rotation animations are perfect. I am going to attempt to channel your patience and accuracy. My idea is solid which makes me want it done, now!
I have no idea how it compares to the base game housing editor because once I started using EHT, (Immaculate Construction), I never used the vanilla UI again.
I was trying to make fish move realistically and at 10 frames a second it wasn't possible for me. I am not saying that someone with an endless amount of patience couldn't pull it off. ::cough:: @bayushi2005 ::cough::
You are right that making doors open is super easy and very believable. It's so fun to make hidden passages that open if you know the right interactable. A+