Logitech M575 trackball angled bases

Update 240602: See latest version here:
https://www.printables.com/model/326527-logitech-m575-trackball-angled-base

I printed and tried this base: https://www.thingiverse.com/thing:5020749 and felt like it raised the trackball too much for me, so I decided to design my own with the following objectives:
* Raise the low part of the trackball as little as possible above the tabletop.
* Move the anti-rotation features to the "top" of the base where no fingers will normally contact them.
* Reduce the time and amount of filament required to print the base.

What I ended up with is not beautiful, but it achieves the objectives.

The first full base I printed was the 20 degree base, and I decided that was not enough tilt for me, so I printed a 30 degree version, which I like better but is very close to the original base that started me on this saga. My base does raise the low part of the trackball less than https://www.thingiverse.com/thing:5020749 though and seems to fit my hand b