I would not call it a 'limitation' because we are talking about the number of files/folders in a folder. (the total is HUGE!)

I've created one folder called 'STYLES' and in that STYLES folder another 30 folders (ballad, rock, latin... etc), each able to contain a max of 500 styles. (total 30x500 = 15000 )

There is no 'folder depth' limitation, so a couple of million files? .... no problem it would only take a depth of 3