As far as I know it’s already in the works for sometime in the future. I agree it’d be great to have that attribute and to be able to filter albums and/or tracks by dynamic range score…however, I find the waveform equally telling and when I happen to took at it it’s generally a confirmation of what my ears are telling me … brickwalled crap sounds like brickwalled crap without having to see the waveform or a DR score.