After a bit of reckless experimentation, I found a setup on my fretless Warwick that I am absolutely in love with:
-Stock MEC passive pups
-Stacked volume/tone pots for both pups (cap values are .047 for neck and .033 for bridge)
-Stan Hinesley Bass Guitar Midrange control
Yes, I know the cover is a bit excessive, but I like it.
Anyone else have any interesting 'Wick mods to share?