Variety is the spice of life.
We all have a "sound" in our heads that we never stop trying to achieve. Then, to make it harder, that "sound" will change over the years. You need to maximize your tonal palette.
My first Dingwall bass was an NG3 w/dRoc switch. I found (on first try) that the "all on" setting was simply too much for me (imho). The middle pickup setting was more to my tonal liking when I play with a pick (3/4's of the time), and the bridge/middle setting was better for my fingerstyle playing. Then I got a Z3 and I found that the neck pickup soloed sounded even better than the middle setting. It had a fuller, more P type tone. I also preferred the bridge/middle in series (3X) rather than in parallel (dRoc). The Z also had a Glock and that's how I know I prefer the DGTC. The Z too had s/p switches which taught me that (after much experimentation) I always kept them set to series.
Those are all my personal preferences, I know. I too prefer the 3 p/u basses, both tonally and visually, they bring the most to the table. Add in the swap between 3x & dRoc switches and you've got quite the tonal palette to choose from, either to find your "sound"; or to find your best starting point.
My AB1 is the result of all I have learned so far and am quite happy with it. I do still have a Combustion and dBird, so I think I'll mess with the "all on" setting some more.

It's good to try new things (this BTW is the source of GAS

).
"A mind is like a parachute... It doesn't work unless it's open." -
Frank Zappa