It's very useful to build a better GUI for Audio Setting and modify the range of LPF/HPF. In my setup of Subaru BRZ - 2 tweeter on front pillars, 2 Midrange Low on front door, 2 way sub woofer on rear side panel, 1 central active subwoofer, JBL 6 Ch Amplifier + central channel is mandatory.
I agree, please provide further sw development to audio settings.