I'm not sure that any of us hold out hope that using the Feedback button will accomplish anything.  This thread is fully FOUR years old now, and I would think that if anything was likely to be done, it would be done by now.

Personally, I'd rather use the Enter key for the Save function - usually (in just about all other software) there's an option for which you want to use the Enter key for.

I absolutely hate having to use nothing but the mouse to navigate - and please don't say QBO is doing everything they can to make navigation easier.  I'm guessing that your software people don't have tons of experience in actually using this kind of software - if they did, they'd be letting us stay on the keyboard more.  If I had three hands, it wouldn't matter - but I don't.