In my opinion, the platter, spindle, and bearing with or without thrust pad form a closed system in the sense that they are carefully engineered to work well together in a well designed turntable. Therefore I would be loathe to do anything to dramatically alter platter mass or the materials used at the bearing/thrust pad interface, or even the lubricant, without considering the effects on the other constituents of the closed system.
Pros and Cons of Platter Mass
I am curious about the pros and cons of high and low mass platters in terms of physics and sonics. Like, why a designer would choose one over the other, and why any of you would have a preference. Although I do not anticipate any freak arguments about which is best in this relatively benign topic, let's try to keep this normal, ok? Thanks