Detailed Expansion/Stuff/Game Pack MEGATHREAD

I want the sims 4 to have more diversity regarding nationalities. Like fictional worlds with fictional nationalities. If A sim has a certain nationalty, they recieve quirks associated with their world of origin! Like in the sims 3 world adventures for example, the people living in that world sold relics from the world and could teach your sims about songs from there. But in the sims 4 it should be a bit more expanded than sims 3. Like special dishes only they have, ways of eating, holidays, clothes, instruments, decoration, etc. In create a sims you can give them the nationality seprerate from traits, like with walk style. And clothes have a select button for clothes related to nationalities.
This could come along with a vacation expansion or something like world adventures. When more destinations come along, more nationalities come as well. When the sims visit their 'home world' they get a moodlet.