A sweet second-hand effect of building a writing tool is that you can use the tool to write about the tool. Dissect it, document it, refine it, sort it all out. (I know this is the case with Futureland as well - I see vin use it like this. And there is a lot of team communication that happens there - Futureland is an amazing tool for that!)
For Multiverse - it seems to be a kind of storytelling tool. And having @weiwei-hsu tell its story is really amazing. Right here: https://multiverse.plus/glitchyowl/in-the-beginning-we-waved-at-each-other
Especially since we've built this whole thing without ever meeting in person - getting to sit down and take in something like this is the next best thing.