I am generally amused by threads like this - from various angles. If we say if it ain't broke - don't fix it, does the thread owner have anything broken? needing fixing? If we say we try everything because the silver bullet may be around the corner, then why ask? If we take my personal opinion of define what the next step needs to be to reach a musical goal and then go for it - how much analysis has been performed? I also say evolution and not revolution. With a decent daily routine, we maintain the chops, body and soul and our playing, body use and ultimately embouchure evolves. So, if we are practicing the Earl Irons lip flexibilities and really cranking them out, our chops are in pretty good shape. If our practice routine is not very evolved, how is the magic of music supposed to work? Most of us don't need an embouchure change, we need a size 13 boot planted where the sun doesn't shine. Most of the problems are simply due to the lack of dedicated practice and the ability to judge that quality playing time to optimize the experience.