Why I won't be using it:
* If I live in Markdown, I want to edit it WYSIWYG. Maybe that's wrong, but I don't want to live in .md code mode (for this reason, I miss Evernote). I author in Typora, but I don't want to keep notes in MD.
* It's sync-ing options don't map to the most used syncing tech on desktops these days. I'd have to pay for Dropbox (given my current ecosystem) just to use it to sync.
* I want folders and sub-folders. Folders and tags don't work for me.
* I wish these systems had a built-in journal mode, like Roam.