I think that the most significant, guiding principle was that we wanted to return to a three-piece live form, whereas we became a four-piece for the last record because the songs had more extensive arrangements and we needed a keyboard player to pull off a lot of those songs. We missed the energy, and more push-and-pull of the three-piece.
It's good to let the other worries have a vacation and have different worries take over and then go back to the old worries.