It would be good that we could send private messages to other players. Also option to send private message to all alliance members.
Alliance should have small forum for example strategy on war, rules, tips etc.
Also there should read on mailbox, who kicked player, used boost, invited player.
Other good ideas to see: Last time online status(example for alliance leader/generals to see), farm and tavern status(see how much food in farm).
also its very unfair to Windows and windows phone users who cannot get free food. This game should be same on all OS.