EnkiSchmidtThat's quite a lot of world building. It looks great even if it is so much to take in that I don't think I completely understand all the details. Especially putting different neighbourhoods in different worlds makes it complex. But it looks like you spent a lot of time thinking this over and it looks good. I also have my own rules of which worlds are close to each other but only follow my own rules loosely. I created a shart for it but don't have it with me right now. I will update and post it tomorrow if you are interested.
What really helped me for batuu was creating a batuu neighborhood in oasis springs. I placed buildings that visually look like they belong on batuu. I added a restaurant with all the batuu dishes on the menu and the staff are aliens (wear the alien masks as uniforms) . There is also a park and a vacation rental. I and my Sims can get a bit of the batuu feeling without actually having to go to batuu. They can even unlock the recipes at the local restaurant.
Simmervillesuch a great map you created. I love it and now I want to make one for myself as well. The roads and other transportation between the worlds is very interesting.