haven't heard the rega with the goo you describe...i am sure it sounds wonderful. my point was and still is that a rega table has very little to seperate it from vibrations and consequnelty it has very poor bass response, less air than many tables and consequently less resolution. Too much outside vibrations getting into the play back is my experience. i have owned a number of rega 3's ranging from luster arms to rb300's in 50 and 60 hz motors, different colors, with and without dust covers with grace f9e's, f9rubies, koetsu rosewood and i can't remember what else. additionally, one wall mount attempt, been on cement floors, wood floors, cement walls, wood walls, drywall with metal studs and wood studs.
one set up did a particularily good job of resolution and it was a lustre arm on an older table with a koetsu rosewood in a cement room using the long wall with monitors on stands. that was the best and it still didn't give up the resolution of other tables i have listened to playing music.
if i ever get the opportunity i would like to listen to a isolation table like you are describing. i know that there are some tables designed for neutron microscopes that could do a very good job of isolation. maybe spending a few grand on something like that will get a rega floating some sound and providing more resolution than the average rig in the real world.