I’m not sure that paradigm fits for a full-fledged application like Drafts, especially when the menu bar icon is already tied to a “quick” version of the app. Do you think that you’ll do most of your processing on iOS once actions are available on macOS? I’m not against the idea, persay, but rather see it as a potential source of confusion for users. How would you access the “full” version of Drafts if you only had a menu bar icon? I suppose you could implement a right-click menu, but that would be non-intuitive as many menu bar apps don’t utilize that paradigm.
EDIT: Just to clarify, I’m not against it, but rather just see it being difficult to implement in an intuitive way.