So far as I am aware, the question has never been asked before. We’ve always assumed that “Charter Membership” meant the title, the lower fee, and the rights and privileges thereunto pertaining. We (mods and admins) have no power over the fees &c. We can do a title change. We will start discussion amongst the mods over whether we’d want to.
There would be some logisitical and procedural questions to overcome (for instance, how to verify that someone WAS indeed a legit “Charter Member”) but let us discuss and see what we come up with.