The latest addition to the board is the After Shock pedal. I've got the EQ2 taking the mono signal in, splitting it with the left still just doing high and low pass filtering, while the right has the high pass filter moved up so that lower notes aren't being passed. Then I route both to the After Shock and set the left to emulate a tube drive with little or no breakup, while the right adds tube overdrive to the higher frequencies, then merge back to a mono signal before going into the compressor. I'm still working on getting the sound the way I want, but have been pleased so far with the effect of using a mostly clean signal on the root note frequencies down low.
I like what you are trying to do. I am doing something similar with my pedalboard: I am overdriving only higher frequencies (mostly mids) and leaving lows and highs clean. The only difference is that I leave the blending of the two signals up to the sound tech-as I am sending both signals separately to FOH.