Fran
Old School here. Never did much LH Bass but I can play the bass pedals really well. Lots of time and work went into that and money customizing my B3. Used to comp with my LH and solo with my right. For years with a drummer and then a drum machine. Loved playing that way but times change.
Depending on the situation just piano and vocal might do it. Then move up to LH Bass with Drum machine. Then add a minimal style or Midi track and play/sing along. An arranger can give you all those scenieros.
How big do you need to sound to cover the job ? And as discussed before how many sounds, styles , etc, do you really need ?
I like you miss the simplicity and the connected feeling I used to get playing, now, not so much.