An by the way, many aspects of a bass can be quantified and rated, unlike a colour.
Sustain
Neck stability
Weight
Tone clarity
Tone range
Comfort
Balance
Output
etc etc.
If you do this, you will come out with what is technically the best bass. Maybe a PhD is required.
In actually have a PhD, though not in anything directly relevant (polisci with a quantitative bent). But I did just have two conversations today about how some things can't really be quantified in any meaningful way. I think that is one of the issues with your list. Beyond that, most of these are subjective in their value. Most people like a lighter bass, but not everybody, and it kind of goes downhill from there. On to some specifics
Sustain-people always talk about this, but I have never played a bass that didn't have more than enough sustain, unless it had set up/fretwork issues
Neck stability- this varies from instrument to instrument even within the same model. My most stable neck us on a no name P bass copy that has never needed a trussrod tweak in 25 years
Clarity- this isn't always a virtue sometimes the song needs a p with flats, tone on zero, through a grunting B15. Sometimes you want that piano clarity
Tone range is nice, but I'll take one awesome tone over a bunch of lame ones
Comfort- totally subjective, and depends a lot on your body shape. SGs poke me in my fat parts , but they don't bother other folks.
Balance- ok, nobody likes neck dive.
Output- amps have input gain controls for a reason