That's what I ended up doing because I didn't want to scroll through 36 top level options (A-Z and 0-9.) My main Artist playlist is now subdivided into ABC, DEF etc., then each of those is subdivided -> A, B, C etc

This makes most things very quick to get to and as there are less spins of the knob I can do it all while 4-wheel-drifting round a corner

Admittedly it was a pain to reorganise from my original flat structure, but was necessary once I got too many different artists.