Not so radical .. Certainly No more so than say : the infamous Mpingo Pucks/discs of yesteryear

I used Foam Glaziers' tape (redundant Rolls on hand) the stuff is intended to hold up to hundreds of Lbs of glazing weight...indefinitely.
My ~7 gram Cart is imo.. well within.. it's structural limits.
Seems to decouple (mostly) the cart from the Tone arm.
Initially a silly experiment, that I've found no reason to move on from.