Shortcut modifier key for new sample on given key

The new feature to put random sounds in specific spots is great! Thanks so much!

I’d like to load a whole kit of random samples to play, then when I find a specific sample that I want to replace, I want to do it without leaving my midi controller.

I would like to be able to have a shortcut to quickly replace a sample with a new random one. The same functionality when right-clicking a note and choosing randomize sample - but without needing the mouse to do that.

Perhaps setting up a modifier key (Midi CC) input that when a button that is mapped to it and held down, it will load a new random sample onto whichever key is pressed next.