We need a kind of SINAD chart, for instance in the form of a calculation of the sum of areas (integrals) betwen estimated in-room curve & target. And rank them from highest to smallest.
I'm skeptical towards this idea. There are many more parameters in a loudspeaker than in a dac or an amp. A dac and amp should simply try to be transparent. That's all. So in a way it's possible to make a simple chart. Loudspeakers should also be transparent, ideally. But given that they are physical transducers there are always inherent trade-offs, and I'm not sure whether we really are at a point now where we can make one such chart for loudspeakers where they are ranked from better to worse.
Example: A waveguide creates more even dispersion characteristics. This is in line with what Tooles research predicts that listeners like. But a waveguide also limits dispersion somewhat. This goes against another of Tooles findings, that listeners often seem to like wide directivity in loudspeakers. So say that we have two speakers, A and B. Speaker A has more even directivity, but it's more narrow because of a waveguide. Speaker B has a directivity that is somewhat more uneven but still good (a three-way with a smaller midrange and tweeter perhaps), but it's much wider. How do we rank these two speakers against each other?
My guess, based on my own anecdotal experiences and research I have read, is that some people would prefer speaker A and some speaker B. This would depend on many things - musical taste (classical music often benefits more from wide directivity than electronic music for example), room and speaker placement, and possibly taste/preference. So I would see it as possibly misleading to make a chart with one speaker ranking.
As I see it, the information Amir has begun to provide here will be extremely, extremely useful. But I think it's also a goal to learn to place that information in context, and educate ourselves as to what these data points actually mean perceptually.
That said, I understand that making rankings has appeal. It obviously makes the results more accessible and comparable. The SINAD chart is probably one reason for the success of ASR. So if such a chart is desirable, my suggestion is to make at least two, possibly three charts, of dimensions which are relevant when choosing loudspeakers.