Ditto on the Q switch for me. I got it converted to a three position toggle with 0/3/6 dB settings instead of the standard 0/8 dB. With the filter wide open, finger-style playing, on a rig with a tweeter, the 3 dB setting adds a little sparkle that you certainly notice, and 6 dB just means more sparkle, without the harshness from 8 dB.
I never have the LPF anywhere but fully open, seems like the drop-off rate is too strong for me.
You can dismount the cicuit board and the wiring harness, and send it to the mothership for modification. While they're at it, you could also have them replace the pu selector with a pan pot - it will unlock a wide range of tone options that the pu selector is keeping away from you.