Good questions! Sorry, some of this was talked about recently a few pages back, so I didn't go into too much detail in the last post.
Bass woods = Ash/Maple
Standard model reference = ash maple with HC JJs in 60's location. I'm terrible with putting into words the tone I'm thinking for. Looking for something with a wee bit less upper mid grind while still retaining a good degree of potential "aggressiveness" that has a defined and bottom that doesn't get lost in the mix, like somewhere between the JJs and the Modern in terms of the low end, but more towards the JJs.
Pickup location preference = standard 60's location
HCs vs SCs = Yes, I've owned both, although on different basses, and the SCs add more of what I'm trying to get less of, so not considering those at the moment
Thanks for clarifying, I now see your point clearly. The soaps I think would cut that upper mids you are looking for but they also are smoother and take away some aggressiveness. Not sure if that would be a love or hate for you. Have you thought about sticking with the HCs and considered a mahogany body or an ebony board?