I've done taller angle wedges (for the Nouvelle run, max was an 8 degree), so they're definitely possible.
I was considering doing a custom PCB for a blocked case based on a 60% layout.
The easiest way to do blocked cases is to make sure the actual PCB is blocked so I can print solid blocks right into the case and not worry with fit.
MOQ on PCBs is about 50 I believe (?), so if enough people are interested, I could do a Interest Check on a blocked kit.
I've never done a PCB run, only 3D printed cases, but it's something I'd like to try in 2020 for sure.
Also, gasket and isolation mount is popular, so I could take advantage of a custom PCB by creating another alternative to tray mount.