Good lord, Jack.... no offense, but these are very broad questions, each one of which merits its own dissertation. Taken as a whole, a series of twelve, it's a pretty daunting prospect to even try to frame a cogent response to your request.
Some questions are maybe too subjective; "what genres are important", "which pickups are best". Indeed, most of these individual topics have been discussed at great length in this and other public forums.
I'm not trying to discourage you from taking on this project. You might want to narrow your focus. And, maybe post it
after the holiday season.
I do wish you well with this. I'll check in to this thread after the Christmas dust settles. I've been playing both basses for many years, so maybe I can help. If all you need is simple yes/no answers (like a poll), I could do a few right now.... but that would just be one old fart's opinion.
Edit; In looking again at your questions, it seems as though I could probably give a pretty quick answer to almost all of them. All I need to do is to rein in my tendency to yammer on at length about the bass.
