5.) Guild Capital Ships - Floating museums of a guild's accomplishments, complete with cantina and unlockable mission terminals based on ops or PVP achievements. An intuitive way to evaluate a guild before you join, an excellent way for a guild to display their super-awesomeness, and a refuge from overcrowded (and laggy) fleets.
Yes! Heavily customizable and upgradeable too. Give the guild something to work towards.