I get this, but don't see it that way.

The feature already exists, but doesn't work.
You have a song, 120 BPM, and the style is not really to your liking.
You open the Style Picker with the filter already set at: filter for current tempo. The filter even shows the correct tempo, but the styles the "Picker" suggests are not filtered accordingly.
The suggestions might be a ballad or fast song, depending on the last style you selected in the picker. This means that the feature (filtering according to current tempo) already exists. Only, it doesn't function.

Biab, Kontakt, Sampletank and lots of nice libraries, from Fluffy audio to Abbey Road drums.
Check out these great contemporary Jazz Styles: www.jazzstylezz.com