Here's a pic of the hardware layout that I test against. Please forgive the low quality image.
I was ready to have PCBs printed, but had to back out at the last minute, so currently, the test platform is still breadboarded, *usually* enclosed in a water/dust-tight container until I can get the custom boards developed.
As far as the LCD, top-row: date, time, previous unit test run status. Bottom row, run count and the git commit checksum of the last run performed. I've been toying with the layout, but this is adequate for now as this unit *only* tests a single software distribution. I have plans and provisions to use a 20 column by 4 row LCD (as soon as I acquire one), so that I can have distribution name along with other information for situations where I may want other Pis testing other distributions for me.