Well, you can be assured from this end, that if Cryptic doesn't do something with the Foundry by F2P time this persons subscription gets canceled again. Because as far as I am concerned it is not worth paying the $15 a month without the Foundry. I will just go to free to play.
Don't worry. You can still use the Foundry on Free to Play now. They have enabled foundry slot purchases for dilithium.