I record and mix a lot of music. In the process I generally found that I would use different bass tones for different sections of songs, and so I bought pedals to re-create this live. Also on occasion where there is "room" for it, I like to add extra creative bits - phaser, envelope filter, wah, delay, whammy. It's all just to add to the texture of the band.
If your band has only 2 dynamics: verse and chorus, then you're not going to find room for much other than a few different tones. Some people change their tone using the tone and volume pots, but personally I don't find that easy to do consistently, or dramatic enough for the contrasts i'm after.