I think a forum for alliance use would be extremely useful; Access for alliance only with ability to edit tabs add/replace them or even lock them given to elders only or even to a forum moderator recruited by the alliance. This would enable co-operative operations to be organised easier. Communication would be simplified, e.g. if players you wish to speak with in your alliance are not on line you could leave a message for them, a noticeboard tab.
This forum would be within the alliance tab so no need to browse away from the game or open a different window.
If you would like to see a working example of this, please message me for a link as I don't wish to mention the game here.
Oh, theme suggestion, Valentines...collect hearts like we did the evidence for Freidrich, the more you collect/find the better/more the rewards. Set a time limit and have a trade in facility to spend the hearts on whatever. I personally did the ransacked Christmas tree thing over 50 times (1 spin per time), got a few good items but mostly not so good, might be an idea to be able to collate those items for higher priced goodies.