Post #1 looking useful - editing that table is no fun.
Not sure about Ideal look for ILI9341 screen? Maybe:
> Reserved line for HUB ID - status of Device Cnt?
> Reserved line for Bt Dongle ID - status of Device Cnt?, Mode 'Pair "true"'?
> Reserved line(s) for JOY ID, position (x,y)'s, line for button state, 3DOF vals?
> Reserved line(s) similar for Mouse ID, (x,y) and buttons?
> Lower area scrolling lines of free form text from keyboard?, and device change notes?
Option to send status that are not SPEW to USB?
When I was doing
Touch Dev I had interface to debug to Line# on some of the screen so status updated in place instead of scrolling for readability - similar to the 10 index elements I started debug_tt with.