Some of my ideas would be:

-Private bank
*Only accessible by you
*You can store crowns
*Pay CE you get an interest account

-Shops
*Rented for a month.
*Costs CE and crowns. *Can sell anything.
*Adds a building in haven somewhere!

-Guild features
(Added the doors the day after I emailed)
•Rank Doors
*Can lock certain ranks.
*Keeps any rank below that out.

•Ranks
*More added
*Maybe customizable
*Promotion button changed. Brings up a menu where we can choose the rank to promote to.

•Guild tab.
*Next to friends.
*Shows offline and online members.
*Shows the guild treasury ammount.

•Chat.
*More channels.
*/m For members+
*/v For Veterans+
*/gm For guild masters.
*Ranks of higher power can see the lower power chat.

Edit: I know that the rank gates were added. They were added right after I sent the e-mail. Like it says in the post. And the shops could go in the AH, the point of the shop is to also sell CE. The private storage could be useful if you're selling items to members and you need to keep certain ones so you just drop them in there. And I mean a GUILD TAB and ONLY a GUILD TAB which will have more features. Maybe even a way to deposit into the treasury and check the log from there. And going into design mode. The chat was just an Idea I really don't care. I will move this to the Ideas submission though but it'll have to be later.