Pretty sure it would be a fairly simple conversion to your Anniversary package to have 3 position Q switches with 0, 3 and 6 dB settings. Had the same thing done to my Spoiler, and it took the Q boost, which at 8 dB sounded harsh to my ears, into useable territory (for me). With the filter wide open, the 3 dB boost indeed adds a wonderful sheen, and the 6 dB some shimmer. So indeed even 3 dB increases are already pretty subtle. The other modification was even more significant though - adding a pan pot. Master volume and a pickup switch is just plain crude, at least to me.
I will be acquainting myself with CVQs in the near future, but that deserves another thread.