Pi Zero Hubpixed Series Case

I was inspired by ftk1's https://www.thingiverse.com/thing:2140363

But I was not happy with that design because it requires the Pi Zero to be mounted upside-down. This makes it not work if the 40-pin bus connector is already installed on the top side of the Pi Zero. Installing the bus connector on the bottom of the Pi was not an acceptable solution to me.

As I started developing the OpenSCAD code for my version, I realized that it would be very easy to make one design that with a few options could be customized to support the original Hubpixed, HubPiWi, HubPiWi Blue, and the Hubserialixed. What you see is the result, although given the present state of Thingiverse I have not enabled it as a customizer.

There are two versions of each case - the "bus" version has a cutout for the 40-pin bus connector. There are two lids - bus and non-bus.

All versions have been tested except the original Hubpixed, since I do not have one and they are no longer available. I expect that th