A separate thread for the desktop experience. FYI, created a throw away profile just to try this out until a better sign in options exist.
The UI is a treat for eyes. This is true for all your apps, and I applaude you for that.
Overall, the desktop experience is smooth with just a few exceptions.
If I add a table or a code block in WYSIWYG editor, I can't get out of it to create the next paragraph. Most editors solve this either by pressing enter or shift+enter. Neither seems to work here. Whatever I do, it just keeps adding new lines to the block I'm already in.
The workaround is to switch to the markdown mode.