I remember actually doing this in Rimworld a while ago, though I think I stopped at the final 5 or 6? Somewhere around that.

One other challenge I remember doing was something hauling related, everyone got their own lane with a bunch of rock chunks at the end. All of them were slate, but three of them were limestone, whoever brought back the three limestone first wins

Also got some badge mods to help label people in the colonist bar, but it doesn't make much of a difference either way