When I get a notification on my WearOS device (Pixel Watch 4), I see a number of default actions (e.g. delete, archive, spam) but it doesn't reflect my settings I have on my mobile.
I would love an option to flag an email (i.e. add star) so that I can later follow up on my mobile/desktop/web client.
Implementation seems to be very simple, if you would just allow "add star" as an additional default action on wearOS notifications (Add Star to the WearNotificationAction enum).