It seems that the vertical tracking angle would be difficult to maintain between lp's of dirrerent mass.
New Mag-Lev Turntable
This looks quite interesting?
https://www.kickstarter.com/projects/245727224/mag-lev-audio-the-first-levitating-turntable
https://www.kickstarter.com/projects/245727224/mag-lev-audio-the-first-levitating-turntable