master volume + either individual volumes or blend/pan pot + tone control(s) is a whole HECKIN lot of potentiometers loading down the pickups, meaning they'd need to be 500k-1M or you'd suffer quite a bit of treble loss. this is not even taking into account how user-unfriendly those controls would be (and possibly useless/not worthy of the real estate required/hassle/component cost)
so tell me a little more about the pickups. you mentioned 1x neck 2x bridge pickups, instead of neck/middle/bridge like a strat (which only have a selector switch, 1 volume, 2 tone, for what it's worth). am I tho believe that the two bridge pickups are physically close to each other? if that is the case, then much like a bridge humbucker in a guitar each coil of the pickup briskly sounds the same so either or as a single coil is a waste.
so now I will digress about my main bass....
same configuration as an older American deluxe pbass but the body was parted out from a blacktop pbass
anyway... this originally had master volume, master tone, 3-way selector switch like a Gibson, and coil split for the bridge
didn't like the coil cut (hum + sounding like the full humbucker but quieter = not happy chris) 3-way switch could switch between pickups quickly but not very useful
now it is master volume, pickup blend, master tone, series/parallel for the bridge
unlike a guitar, I find being able to blend between pickups extremely useful (my usual tone is just on the favoring pbass side of the center detente. just enough attack and high mids to fill out the low-mid growl), will favor the bridge side with bridge in parallel and tone turned down for more arpegiated things
all in all it is quite intuitive and simple
(of course I'm going to add another hole put in a preamp to give treble and bass knobs but I guess this is why I can't have nice things lol)
anyway, that was a lot of words. I hope this helps flesh out what should or shouldn't be on there based on my experience