Would it be possible please to have an icon/button on the main menu bar where you can issue an 'abort' for your mount?
This is just in case of a holy crap moment, I must abort now.... as in emergency situations?
Sure this is already available in 2.8.1 if you configure the toolbars, you'll find the abort/sync actions, but I just fixed several issues with them (including missing icons) and some behavior changes. So with 2.8.2, it should be there.