Boeing 737 Max: A 'Plane Made by People That Don't Know How to Make 'Planes?

After the two crashes of the 737 Max and it's subsequent grounding, it would only be right and proper that the FAA do due diligence and go over the aircraft with a critical eye.
After all, was there anything else along with the MCAS system that Boeing slipped past the regulators?

Well, it seems the FAA are unhappy with a number of aspects of the 737 Max. Obviously MCAS itself appears poorly implemented, but the modifications to MCAS threw up other issues with the flight control software systems.

Now it appears the FAA have concerns about the routing of wiring within the aircraft. Given that the 737 is design that has been made since the 60's, how have Boeing not just routed wiring in the same old locations?

The more that comes out about the 737 Max, the more it appears there were several departures from previous 737 iterations. Yet Boeing is on record making out that the Max is just the same or as similar as possible to previous versions.

It makes you wonder if the people involved in the 737 Max project had any experience with the previous models. Did Boeing sack everyone and put new inexperienced team on the job? Did the team have any experience in making an aircraft before? What seems certain is that there are many aspects of the 737 Max that the FAA weren't aware of and are unhappy with now they are coming to light.