Just wondered why the Magnatraction was such a deal-breaker for you? Again IMHO, it seems:
A) Designed for the East Coast freestylers or those Alaska- bound who never want to lose an edge on a vert face and
B) aimed at the same customer I mentioned before who is also not ever going to sharpen his edges, is already sliding around on a rockered board that doesn't track well, and needs help.
To me, that doesn't sound like you! If you know how to use edges properly AND keep your board well serviced, the Mag will give you great grip but also produce massive drag!
One of our ex-hard booter Full Certs found it overkill for someone with skills.
Never Summer, Arbor and Burton all have additional edge grip systems that are less obtrusive.
Anyway, signing off...it's snowing hard here and the resort opens tomorrow, got to get ready!