I have met MJ. I get the impression that she'll wind what she winds, and you'll like it, because its good. I think this applies to the likes of EVH and The Rev Billy G as much as you and me...
If I start with a sound in mind (rather than a list of specs), it is unlikely that I would think it sucked. That has never happened in my case. She is able to translate my weird descriptions into something that always just works.