Since MB can’t read tags froms Traktor or other 3rd party programs that do detect tempo and key of audio files, I suggest SB to integrate those rapid and relatively common algorythms in their scanning process.
It would be an enormous time saver compared to cataloging each file manually on large libraries were such information is only set in the file name or in the folder name they belong to.
Picking the audio file with the closest tempo or key, should speed creative process and preserve audio quality by preventing over warping and/or transposing.