My plan for Planet Zee is that you will be going back there. There is going to be a point where you will have multiple Harems and you will be able to freely go to whichever one you want and stay there or go back to another one. One will be planet zee. One will be the hotel and the house with garage will be the third. The future may be one too but not sure yet (time travel gets messy). There may be more but that is my plan for now. It is just going to take time.
Also, I want to do this dungeon crawling thing on planet zee. A rogue like kind of thing in the pipes. You will have stats and these sexual finishing moves. I have already done a mock up. I don't know your age but it will be kinda like Wizardry but with fully animated walking around.