I know this may seem a bit unfair to others and a bit radical, but I think it will boost membership and help to keep those that are subscribers from going FTP.
With the removal of the VA tokens it is now a need to buy the retrofits. Instead of Gold Memebers having to go through and buy each and everyone, maybe it would be a good idea to do a bundle at a discounted price for Gold Members, and make it unavailable to Silver members, or for a larger price. I think this would balance out nicely and you would see a temporary boost in sales, and in the end possibly in all.
A few "Gold Member only" items in C-store would promote people into paying for gold, as well as give a bit of an edge.
But this may just be a suggestion from a raving lunatic.