Rekordbox Sampler - Make it all MIDI mappable please

The Sampler function in Rekordbox is useful and expansive, so why are so few of the controls able to be controlled by MIDI? It would be great to use MIDI commands to control the individual volume of samples, as it would be to transfer a slice obtained from a sound file in one of the decks into a sampler slot. In a live setting, it's just not practical to use a trackpad or similar.

Please could this be looked into?

Cheers