Background
Last December I picked up a 2018 MBP 15" (2.6 / 32GB / 1TB / V20) to replace my 2011 MBP 15" which evidently died from Radeon Gate. I was quite happy with the 2011 (internal SSD / Optibay / 16GB), and a bit annoyed that I would have to move to a machine which was not upgradable. I...