Summary

I found the prior model to require much longer screws than I wanted to use to connect my Raspberry Pi to the lower piece. This rework makes the columns that support the pi larger diameter so the screw head can go inside the column and shorter screws can be used.
I used this with the PoE+ HAT to power my board over ethernet (as I had been doing with an external PoE adapter previously).

Because the top of the columns is now a 90degree overhang, you will need to use supports.