I have an idea that will make for a great event. The event will last 7 days. During the first six days clans will compete to finish epic battles as fast as possible. The remaining time of each completed epic battle will be counted up during these six days. On the seventh day, clans will have to defeat a new epic battle with the time they have accumulated. The reward system will then be based on what clans have the most time remaining. That remaining time should then be able to be coverted into points and spent on "clan based spells" and "clan based equipment" Ideas for clan based equipment are things like, an armoury, what can provide defense bonuses. Or a weapon forge what could provide attack bonuses.
Not necessarily because an ROTW only has a small time limit, you could gain more time by doing a fast, longer EB. what makes clans have to think strategic about what they hit.
2 rotwb completed in minutes means they would have roughly 24 hours straight away on the last day. This idea is interesting but needs a lot of fine tuning.