clan war idea's

Hello everyone, I have a few suggestions for clan wars.

1. A chatroom between both clans to talk smack.
2. A rematch feature. Both clans must agree and you can have a 3 day period to decide.
3. And the most important one of a all 1 week clan war ban on members who leave before their two attacks.
4. Just thought of this one. If a member wants to leave the clan during the preparation day, they must ask the leader for permission and the leader can release said player. After which the clan can use a alternate player in their clan or try to find a new member before the war starts.

Just a few ideas I hope you will consider.