I think it would be nice if we could upload and edit our games on the dashboard via itch app. Is it possible?
Upload and edit games
Now the app is more or less a fully-featured browser, so you can definitely access your dashboard / edit games from there :)
Here's a tip: when opening one of your games in a tab, just hit 'Ctrl+L' (or click the address bar up top) and add '/edit' after the game's url — it'll take you to the edit page.
A 'Developer mode' for the app is planned for later (but is currently blocked by this issue)