As a classic died in the wool empiricist, granted that you can identify "misery" factors, given a population of 1,000 users, how do you propose deriving a misery index for that population?
We can measure download, upload, ping, jitter pretty much without user intervention. For the measurements you hypothesize, how you you automatically extract those indecies without subjective user contamination.
I.e. my download speed sucks. Measure the download speed.
My isp doesn't fix my problem. Measure what? How?
Human survey technology is 70+ years old and it still has problems figuring out how to correlate opinion with fact.
Without an objective measurement scheme that doesn't require human interaction, the misery index is a cool hypothesis with no way to link to actual data. What objective measurements can be made? Answer that and the index becomes useful. Otherwise it's just consumer whining.
Not trying to be combative here, in fact I like the concept you support, but I'm hard pressed to see how the concept can lead to data, and the data lead to policy proposals.