I think Humminbirds are top notch, but there are a couple of things that would be nice to see.
Pysically change the size of the display didgets. The temp doesnt need to be as big as the depth. I know you can change the tenths. Maybe give us small medium and large display choices
Being able to select all the display readouts on all screens, carry the same from the depth screen to the gps screen
When you select the icon on the gps screen have them all pop up rather than screen thru them all.