I received mine last week, bear in mind I'm an EE by trade for the offshore survey industry, so I'm used to wiring stuff, I also have a hand in shipping the product we build, and we are a small 5 person company so I understand about everyone being stretched, my thoughts:
1. The 3d printed stuff looks crappy compared to the previous din rail mounting base - the print quality is a bit nasty.
2. The QC on the cellmon cables is poor. If you are going to fill the back of the crimp with hot melt, at least fill the back of the crimp, don't just put a small cold blob on there which doesn't stick to the crimp or the cable insulation
3. As a follow on from point 2, either crimp, or solder, or do both - but don't mix and match in a batch. I had 2 that were not crimped + soldered, just soldered, and one of those wasn't soldered properly, the wire pulled out. I remade it. I'm talking the +ve ring terminal here.
4. The packaging was a bit too recycled - they need to improve the packaging.