So currently we can buy bundles of ships with GS as well as other purchases.
GS can come mainly from the DLC bundles or direct purchase.
Why not allow for the DLC packs to be purchasable with GS? The way I see it working is an extension of the “Pro Tools” section of the armory where you can purchase the DLC along with the ship bundles. The DLC would, of course, have the GS bonus removed.
This is just a way to simplify the DLC purchasing system so that people can top up their wallets to get a DLC pack without having to spend the full $60. It might not be too good for earning money, though, which is my main worry about this suggestion.