Fantastic description. I was quite surprised, that many steps I did similar, but it took me almost 1 year and in minimum about 100 flights, to get there.
With this wiki I think you helped now a lot of people to overcome frustrating tuning hours and also crashes.
I’m setting up to fly a big X8 similar to above (slightly bigger) T-Motor U10II KV100 and 30" props. I’ll follow your tuning guideline. However noticed MOT_BAT_VOLT_MAX and MOT_BAT_VOLT_MIN will not work for 12S? Range stops at 35V.