I think this is a great event to give a break from the typical lobster-pot.
Can I make a few suggestions for next time?
1) Specify team sizes/limits (maybe 6v6 max, down to 4v4 min?)
2) Predetermine a map list, and specify how maps will be picked
3) Specify how and when mercs can be used
4) Determine whether multiple battles will occur simultaneously, or one at a time.
5) (Most important) Have an organizer in each clan-wars room with boss rights to move players around and explain what's happening.
Just a few thoughts. Thank you :)