Most of the status and warning text is too small to read for people who need to wear glasses for driving. An option for larger text onscreen, particularly the driving information in the top panel (aside from speed) and any of the warning and notifications that appear.
Background: sometimes you want to type in a password (or paste from a password manager) on the web browser. It's a pain to type a long complicated password on the touchscreen
Idea: similar to AppleTV, allow the mobile app to pop-up an input box whenever the touch screen is seeking input. Then you could easily type from your phone keyboard.