It's interesting to see after all these years the (final) cases are ready - sort of. Well, also interesting to seethat the old company tinkered years onto these shapes and was not able to make it good looking. I would not hire this company for anything again and warn others to do as well.
Making molds that do what they should is part of the job. I know that injection molding is a science of it's own, you have to look at thousands of things so that it will work at the end. Constant thickness of the walls of an injection molded plastic piece for instance is critical and can lead to this kind of distortion ED showed us in the Video. Choosing the best spots for the injection of the material is also important, Molding Companies should know this as well.
I just can make a guess that the actual design of the case is also an issue, maybe it is not the best design to be used as molded parts, maybe other shapes and forms would lead into better results, no clue. Fact is, even chinese companies can do good quality today when it comes to injection molding. I recnetly folowed an Shop owner and his trip to China to visit Factories that make (legal!) LEGO alternatives, and there are many companies in China that do compatible bricks and parts. A lego (compatible) brick needs tolerances up to 1/1000mm if you like to know. So it must be precise or it just does not work. A Pandora case is compared simple to that I would assume.
I'm sure Azuls and the new company will make a great job and fix most of the remaining issues.
Well, back to the topic, the cases look "usable", I just would spice up the colours more, to dull, to flat. We don't want shiny surfaces but a little bit more "depth" and "saturation" into the colours should not hurt.
If you really need to paint the pyra case, well please use at least a paint that STICKS onto the surface, unlike the Pandora paint.