Just out of curiosity . . . Could you substitute other pickups for the ones that come in the Game Changer and still be able use all the coil configurations?
You can replace TGC pickups with (almost) any passive guitar pickup.
I say, "almost" because it is hard to know the specifications for every single pickup in the world made by other manufacturers, and "passive," because active pickups tend to have preamps built in that could potential overload the input of The Game Changer.
what did everyone use?
I find the stock bridge great in the HSH if you want to play Lamb of God. It actually reminds of the tone from ZZ Top Tush or even the sound of the Beastie Boys Fight for your Right.
However, I think the first thing I'll try is the Tone Zone Chrome in the bridge. I have the HH with the EVH Dimarzio's and love it, so this may bring it in line with that.