Battletech Nesting Buildings

The objective:
1) Easy-print and paint buildings
2) Minimal storage space
3) Travel capability

I believe I've achieved all three.

These are simple buildings that nest and are hollow. They're meant for Alpha Strike specifically. Print them upsidedown for maximal ease. These are intended to be easy to print and paint and readily nesting. In total, within one of the large 4x4" buildings, you can store:

-1x 4x4x4" Large
-3x Square short buildings
-9x Tall thin buildings
-27x Small buildings

You put three small buildings into each tall building, then three tall buildings into each short square, then three short squares into the biggest building. Photos are meant to show what is inside one "brick" as I call them.

Painting: again, I intended these to be super easy. Prime them black and then hit them with gray somewhat erratically. You can do more to make them prettier but the point here is easy of getting something on table without taking up your whole room with terrain. Two bricks wort