[oneeyedpigeon]

> We spent a good amount of time compressing our blocking bundle size (html, JS, CSS), which actually is JS for the entire app, not just that page

The problem with this approach is that, whilst it might be great for readers that view > n pages, the experience for viewing the first page is so terrible that many won't get past that one. It's still running at 37 requests, 2.7 MB, and 4.2 seconds even after your optimisations. Didn't load at all on my iPad.

If the javascript is for editing, it's clearly wasteful to deliver that to people who definitely won't be doing any editing; isn't it possible to defer that until it's needed?