I'd agree with you for synthesizing, particularly with a master volume knob. But playing live my volume range is from audible to just me (So I can plan what people will hear), to easily the loudest thing going ;) Which is louder than you want to set your CD player :)

Also, I strongly believe in using dynamics throughout the set. The min-max range I use is one of the strongest impacts I have on what people feel. Tinkled whisper to roar

Though yes, like you, I love my other variables too like strike position, angle, etc