I felt that spark as well. In my working lifetime, there were five-year cycles. A bunch of obnoxious (and they were always obnoxious) consultants would come in and say we were doing everything wrong, and we need to do it all differently. Giant upheaval. Maybe some layoffs and/or reassignments. Then, five years later a different group of obnoxious consultants come in and tell us what those other guys told us was completely wrong. You need to do things their way. Rinse and repeat.
I never saw much improvement in performance or efficiency or much of anything.