Three things I'd like to try in the hypothetical test bass... Thunderbird pickups, Nordstrand BigRig pickups, or Lace Alumitone Bassbars.
A pair of each in the typical Fender PJ locations, and/or also in typical Ric locations.
Or route out a swimming pool in this poor test bass and optimize the pickup locations for each pair.![]()
If you rout out a swimming pool, I have a suggestion... paint the bass black, and commission a pg that covers the swimming pool route, and makes your bass look like it's wearing a tux... so make that bridge pickup an MM, it looks the most like a cummerbund....

