I spent all afternoon downloading sims for a
pixel_trade prosperity, and it was exhausting. But to me the most tedious part of setting up a prosperity is making the sims, and getting them all unique enough and trying to remember if you already had someone who kind of looked like this and so on and so on. I thought this would be a shortcut but now I'm not so sure! I downloaded over 40 sims (too many!) and made little notes on each so I could more easily tell who was who for proper credit.
There are some really great sims creators out there. I can't believe how many gorgeous and interesting sims I saw today.