what do you thing about having tabbed screens for Locus ?
Instead of fiddling around - selecting track - press "i" - press "Diagram"
doubleclick on screen - select right panel - choose Customer screen ....
swipe right => Diagram of current route/track with Position indicator
swipe left => show customer screen or geocaches nearby or POIs nearby or...
The action could be done either by swiping on a dedicated zone on mapscreen, or some tabs (like in browsers) or at bottom with two arrows - see screendump.
Content of the "screens" should be user-defined.
Reason behind: I heavily use Locus for guiding and tracking - so today - when idea was born. It was raining and I often wanted to check when the tophill is approaching. During walk to fiddle on screen is not so easy.. So I had to stop - fiddle - with wet fingers - just to know how the altitude course is.
And here I wished just click left or right on BIG butons :-)