As a group, you have a very large pallet of dynamic ideas, especially in terms of attack, vibrato style and tone. But individually, they have a few ideas that define their sound and they aggressively stick with it. Govan, Lane are certainly the exception. From what I remember of Gilbert, he also has a decently wide expressive pallet as well. This comes from committing to learning and investigating "guitar god" rock, metal, classical, jazz and world music on two separate instruments that I perform and teach professionally on. There are certainly other pretty dramatic criticisms I have of other styles (the technical perfection over expression/interpretation, downplaying of improvisation and composition in classical music; the lack of variation in form [this really bothers me] in jazz music). These are living, developing art forms. I don't see anything wrong with criticism to bring in new levels of expression within that form.