World Pack?

"SimsILikeSims;c-18185147" wrote:
I would love a Time Travel EP that included all the historical worlds: . . .

While the time travel EP is a very different concept overall, a lot of the worlds you suggested sound like a great idea for a world pack, especially if you piggyback off of @Mak27 's hero object concept. I'm intrigued by the idea of a horse and carriage as a hero object, especially if you could develop a relationship with the horse, sort of like patchy, and if you could build handiness by tinkering with the carriage.

"SimsILikeSims;c-18185147" wrote:
Speaking of which, I do wish the Sims Cottage Living had included wool-producing animals.

In Cottage Living you can shear the llamas for wool and use the wool for craftables.