If you hadn't noticed ALL content prior to this is obtainable by anyone, on their own through df or shouting. The only thing you can possibly argue to that is T5. This is the thing you make a stand at? you find grinding gil a fun form of end game content for FC to do together? Make CT extremely hard to enter and complete. This comes down to lack of server space. If it didn't Yoshi would give everyone everything they want just like he did with all content prior to this.