I’m pretty on board with most of those points.
Edit: here’s a link to a quick read that I think makes a really convincing case for SBG.
https://www.amazon.com/Repair-Kit-Grading-Assessment-Institute/dp/0132488639/ref=mp_s_a_1_1?ie=UTF8&qid=1549128419&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=a+repair+kit+for+grading&dpPl=1&dpID=41zXdWlsTZL&ref=plSrch