I really like this idea and I think it is a way to make clans more relevant in destiny too. My idea is each clan has their own ketch with a main social space, with mini games, shooting range, postmaster, bounty bot, clan message board etc and then possiably each clan member gets a room on the ship or an area they can decorate with shades emblms weapons and armour or other items. The way clans would get a ketch would be through a one time raid which requires 12 (or more) clan members. It would be like this "...A damaged Fallen Ketch has been spotted in orbit. Assemble your clan and take this ship to aid your efforts against the darkness..." The raid would consist of lots of mini boss battles to clear out the ship, wave defence parts whilst repairing parts if the ship or opening some doors ect and a couple of boss battles like taking the bridge from the fallen and a high servitor like the one from PoE. Once you have taken the ship it flys to the tower where as a clan you have to collectively pay a large amount of glimmer, this would take a couple of days at min, to the shipwright to fix your ship. Your clan then has the ship. After this your clan leader can set improvements for your clan to 'build' like the things mentioned above or other rooms like a sparrow hanger or a private clan clash area. These improvements would require members to donate glimmer or other materials, possiably you have to kill specific enemy's to gain these parts like in patrol. This would also allow bungie to continually add new areas to get.