My problem with that is that small domes end up being useless later on, so you should probably best tear them down, and rebuild bigger ones, which seems silly to me. And for preventing building monoculture, you still should need to consider walk times. Colonists want to live reasonably close to their workplace, their shopping place, entertainment cannot be too far away. All means you need to spread out things over your domes.
Also for entertainment, I want to eventually provide all my colonists with the entire choice of entertainments, so they can freely pick... which is absolutely not possible if you can't share them between domes.
Also for entertainment, I want to eventually provide all my colonists with the entire choice of entertainments, so they can freely pick... which is absolutely not possible if you can't share them between domes.