I am hoping you can create a pvp area or something guilds can compete in other than the PvP ladder, maybe guild quests and contributing to increase guild levels and access more perks, a map where players can battle one another in a faction sort of system to achieve an objective. There are much more benefits to being in a guild than just the 25% XP boost provided by being the top in PVE/PVP, something should be done for the guild community in general.
This is a forum for possible suggestions, mainly I'm looking for input from the other 99.9% guild members out there.