Here's what mine has evolved into for tuning. It's very busy, but it has all the data I need on screen. My laptop is a decent size so I can quickly find the value I need when it's sitting on the passenger seat. I did not worry about aesthetics - as those of you with any sense can easily tell
The sections are grouped according to function:
Upper left: general conditions. Coolant and MAT change colors as the temps go up.
Lower left: idle tuning
Upper right: additional detail (I routinely travel up down 1-2k+ ft elevation hence the barometric info)
The AFR gauge also shows the AFR target in bold. The EGO Correction gauge shows the AFR Error in bold.
Boost duty is really too small but it was the last thing added and that was the only real estate left ;)
And last, but not least, MAP is in the center. Given it's a turbo motor, it's probably what I check most often (it has a history tail to show peak MAP, but that breaks often hence needing a restart).