1) new map expansion with crafting materials for 4* armors
2) updated in game communication system to allow for private messages
3) an event calendar at least two weeks preferably a month in advance so we aren't constantly surprised by what war is happening when.
4) a guild recruitment center where guilds can easily see available players and players can search for a guild based on more than a 2 line description.
5) a guild history added to player profiles, and a note that says "kicked" or "left guild" so we will know why players left a guild.
6) in game auction system for armors, I.e. I have two specters and only need 1, I can put the armor on the auction block anonymously and players can bid on the armor with gems, as the auction "house" gree gets a cut of the gems, say 25% and the rest go to the player. Gems would still have to be purchased so gree would still make their money. Plus they get a "cut".
7) show guild alliances in game. The game has alliances so why not just acknowledge them...
8) rebalance mono armors. Monos only get 1 element bonus from guild so either double the single element bonus or increase mono armor stats 10% compared to similar dual element armors. This would put them on equal footing and make them more desirable.
Ok, think that's it for now and a lot of this has already been said.