I agree; I’m unsure how to measure various levels of gender dysphoria. Try Mr. Dante to learn about the various levels of hell.
There are several factors that influence the surgeries one chooses to have, the most important by far being personal finances. Age and geographic location could also be factors: being clocked in parts of Texas will get me harassed, possibly beaten, or even worse.
I plan on all the major surgeries. At the start of transition, I just wanted to have HRT and to be myself, but that quickly changed when I realized what surgery could do for my self-esteem and my acceptance. SRS is more personal since it is not public, but I plan on that too, once everything else is done.
What is the efficacy of each of the various surgeries on alleviating GD? Some studies are showing that FFS and BA can actually do more than SRS to make patients feel better. That could help one assign priority to them.