The option of banning AE at CS will only create chaos . Elf's are the ones who can Crowd Control and really be the difference between winning and loosing the Castle siege.You can shape your tactics based on the skill of your elf-player. Otherwise there will be 40-50 players running around the room like madmen without being able to control or create any specific tasks or tactics. Also ,taking ice-arrow away will mean, at least for me as an elf player, that besides buffing people i will be useless.