I'm up to 7000 words in one document. The feature I'm missing in Dropbox Paper is around organising my notes and research for what I'm writing. Think of Scrivener or other writers' tool, which knows you're writing on many levels and need a scratchpad around, and to keep the outline bullet points even after you've written prose for that section.

I've taken to having a separate Paper document to contain the research/notes/outline and one for the draft writing. If this is a use-case you consider for Paper, it'd be awesome to have more support.

If not, then HN can you suggest a better, shared writing environment?

I read about notion a few days ago and it's been smooth so far. It's everything I've been thinking of for when "I'm gonna make my own note-taking app I swear". I'm looking at moving maybe a third of my notes to it and use it for a few weeks before I consider moving fully and paying, I guess. The desktop client is an electron app so that might be a turn off for some. But! There's a web clipper on their road map too so that's one point for them that always makes me look back at evernote.

I haven't used evernote so I don't know all of its features, and I'm sure dynalist is missing many of them, but it's wonderful for all those things you mentioned (notes, lists, ideas, reminders, todos). The android app is a little sluggish, but that's pretty much my only complaint, I love everything else about it.