The best way to be an alliance leader is to be extremely active, personable, and organized. You need to communicate your overall plans and ideas to the Alliance, in either 1 on 1 chats or daily Alliance newsletters. Also, keeping a level-head when resolving disputes can help, no one likes the hot-head who threatens to kick anyone who doesn't conform to his every whim. Run your Alliance like a pure democracy, not an autocracy. Outside forms of communication, (i.e Cell phones, email, skype) make maintaing open and clear lines of communication easy.
List of Good leader traits:
1. Excellent Communication Skills
3. Intelligence (You should know how the game works before you run an Alliance)
Most Relics Held At One Time:2
Most Power: 243