Are you saying that Elantris has other worldhoppers in? I just finished the prose version of White Sand as well (i've never been a fan of graphic novels but didnt want to miss anything from the Cosmere) and didnt even notice Hoid in it, let alone other worldhoppers there.
So you created Vasher and then made them a worldhopper, and the magic system and Nalthis stemmed from there? I actually have another question related to that. Have you ever thought about something you wanted to add to the Cosmere - say, an idea or an ability or something - and then built from there, or do you always write a cool story because its a cool story and the Cosmere stuff comes after?
For example, did you write Mistborn E1 to introduce the idea of Shards or did you write the plot and then realize you can wiggle the shards in there?
Hoid's part in White Sand was very minimal. I believe he's only referenced, and doesn't even appear on screen. Though Elantris has the famous mural depicting worldhopping.
You have it right. I was designing Vasher, decided he was a worldhopper, and then filed away "I'll tell his backstory some day" in the back of my brain. The magic for Nalthis grew more out of the idea for a sympathetic magic than it did for him, but the book was always intended to be his backstory world, so knowledge that Shardblades (or a version of them) being involved was part of my core creation of that setting.
Every story happens differently. Shadows for Silence happened from a writing prompt, for example. But at the same time, I'd been imagining for years a world to delve more into Cognitive Shadows. These things just kind of fit together as you work on them in your brain. But I've started with story first, and I've started with world first. Mostly, though, it's a mixture of both.
By Era One of Mistborn I was already very certain what I was doing with Shards, and so they were there from the get go. I'd say in the cosmere canon right now, White Sand is the most oddball, since it was the only world I designed and wrote a book in (the 1997 version, which is different from the 2000 version) before I had settled on the mechanics of the cosmere. I then placed it in the cosmere when writing the new version.
All of the published novels were written with the cosmere mechanics fully locked in, however, and the interactions of the Shards set forth.
Where is that [Hoid's part in White Sand]? I totally missed it? Is it possible to read the 97 version too, and LORD MASTRELL as well?
I don't send out the 97 version. It's just too bad. (Sorry.) Maybe some day, but not right now. It's the first book I ever wrote.