One thing that would be nice to have with the next Protokit version would be a pressure switch or two at the back of the case. This way, if someone pries the enclosure off the wall, it would trip the perimeter defense system.
All and all, I like the design of the Protokit series. They look professional enough to make the unit look like something “serious”, as opposed to a homebrew kit. This is important when pitching prototypes to potential customers, especially a security sensitive edge computing solution I’m working on.