Well, frankly, the bass' job is to serve the rest of the music on top. We build a foundation for the others. That's the servant attitude. That's NOT the same as being subordinate to anyone else. I don't much care for doubling guitar lines, that's redundant and subservient. But the bass/guitar solo bit on "Birthday" by The Beatles works really well. And McCartney playing the "Day Tripper" riff in the same octave as the guitar is cool bit of music too. But dig how Jack Bruce really plays "Sunshine of Your Love"- he's not just playing the same lick an octave lower, but he's playing around with the chromatic descending bit in different octaves.
The point is that a great bassist serves the MUSIC and the song, not the bass. No point putting the bass up front if the music isn't served by it. Most of the "cool" or "flashy" or "great" bassists that are admired for chops and skill understand that lesson implicitly. Jack Bruce, Victor Wooten, Jaco (at least when he was coherent), Flea, et. al. play a lot of things that stand out. But they just as often create a voice that supports the song. Each of them also plays simple stuff when it's called for.
And the point of leading by being a servant is that by focusing on the music instead of on the particular instrument we play, allows us to cast the vision of the song better than someone who's more concerned with playing a cool bass part than playing a part that makes the song cool. It's not that bass (or any instrument) is less important or less worthy. It's that the way to do the job is different.
jte