I'm told it was done in a certain way to minimise jumping around (CHDIR commands, etc) which can be very slow in FTP and/or NAS resources. Bear in mind it scans one side, then the other, not both at once (otherwise if you had a slow side and a fast side, the latter would constantly be waiting for the former to catch up / keep in step).
I gather it won't be changing...
I gather it won't be changing...