Also, you'll get the added plus of looking like a BAMF or end up wearing the dunce cap. Really depends on how you present yourself with the bass.
Really? A dunce? How you "present yourself"? I don't even understand what you mean... are fanned frets inherently unattractive or something? To be honest, most people see and hear me play my Dingwall and then, only after a few hours, or even a
few sessions do they say, "Holy crap, those frets!"
OP, look up a grand piano. Notice how the low strings are on the long end of the instrument, high strings on the shorter end.
Frets are fanned to make up for
inharmonicity... that ugly, tubby, sorta out of tune crappy sound you get when you try to play your E string above the 12th fret. The extended scale lends clarity to the low notes without the need to use really big, heavy strings, which gives you more of that crappy,
inharmonic sound. On a shorter scale. Sure, the whole instrument could be longer scale, but then you get twangier, tighter high strings. And it gets uncomfortable to as you reach for the low notes.
So fan the frets, and lined them up to basically match the fan of your four fretting fingers. Bam... instantly comfortable, balanced tension from one string to the next, and
enharmonic notes (the same notes played on different strings) suddenly sound exactly alike. Try that on a P bass. Your B on the A string isn't gonna sound nearly the same as B on the E string.