Wow, great write up!
Couple of repsonses for you....
First of all, I can tell you, this will get moved out of the Bug Reports.... Nothing here really is a 'bug'
Second, Roughly half of your bullets can be easily fixed using the skin editor. I like your ideas.... Make up a skin, and I will use it :-D Positions, size of buttons, displayed info, its all pretty easy to change with the skin editor.
I do agre with your navigation bit too. I have all the same frustrations, having worked with Streets & Trips previously, I like the feature that allows you to drag your route where you want it.
I almost wonder, if with your experience, and ideas.... maybe you should join the Streetdeck team? LOL