Since most of us guitarists use a seperate unit as a preamp, maybe some presets taylored to guitarists without any distortions. Ex-more tremolos, flanges, choruses effect presets. Also, for musicians that do their own sound, like me, presets for "live vocals for a club" or "live delay presets for vocals in a club", "live acoustic guitar", etc. We buy high end products like yours for the sound but some of us aren't engineers so we rely on the presets.
