I've been looking into doing a little more post-rock, ambient sort of bass stuff. I recorded a couple of clips with my Mr. Black Supermoon and it sounds pretty good. It just kind of feels like something's missing.
for me bass is something i use to lock in with a drummer, so i'd have no idea what to do with that kind of sound (does sound really cool though); it strikes me that a volume pedal could be useful for swelling in and fading out the "soundscapes" you're creating there.
you'd want either an active pedal or a low impedance version run after another "always on" effect.