Rootkey User-definable In Generate Drumkit

why is the drumset automapping rootkey (? the key where it starts mapping samples upwards from) not user definable? c4 which it starts from is in the middle of my midikeyboard, so half my keyboard is un-used now :S

yeah, i know i can set my midikeyboard to play a couple of ocatves higher, but that would make all the instruments play way too high by default.

isn’t this one of those obvious functions?