Disclaimer- I'm not a musician; I have little training on chord theory, modes, etc. I don't write my own music, I just try to learn and play songs that I like. (My favorite genre is '70s Singer-Songwriter, and one of the hallmarks is a descending bass line.)

I don't understand the comments about repetitive basslines. All good arrangers have an "on bass" or "bass inversion" function that lets you force the bass to the lowest note played. So theoretically, you could play a different bass note, or ANY desired bass note, on any beat of the song. In some cases it might be necessary to customize the bass track, usually simplifying it to just the root (it could still have a little modulation on long-held chords.) And of course make sure that the bass retriggers with most every chord change. On most arrangers, changing the bassline like this isn't difficult- I've modified the bass pattern just noodling around in the music store.

But... forcing the bass like this means playing a lot of slash chords, sometimes on successive beats. To reach all of the notes on a non-intelligent instrument, your left hand would be jumping all over the chord recognition area like Daffy Duck! Which is precisely why I like arranger faculties that allow you to trigger a major chord with a single note, seventh chords with only two notes, etc. (Some of you would probably recruit your right hand to pick up the other notes, but I've never been able to play two-handed. I'm strictly a left hand chords, right-hand melody kind of guy.)

If I really had guts I would try to learn the bass pedals, which is how an independently-specified bassline USED to be played. But I'm already chest-deep in intelligent arrangers and slash chords. At my age I doubt I would ever become proficient enough with the pedals, I think I can get further by staying the road that I'm on.

So I have no problem with repetitive basslines. But when I get on a soap box about style programming, retrigger behavior, and ergonomic fingering for a wide range of chord types, now you know why! :-D