While it seems like a great idea for maintaining clan members, there's a huge reduction in exposure when there's a cooldown on being able to join. I 100% agree that clan benefits need a buffer period, but the actual joining is unnecessary.
With a week long time someone can't be in a clan, a lot of people I've noticed are unhappy but won't leave in a pretty good number of different clans. Plus there are always people who aren't happy, but not unhappy, not enjoying their clan experience because there's such a hindrance to joining a different clan and exploring new opportunities.
I'd never want to trap a member in my clan by force. If they want to find somewhere else better suited for them, why get in the way just to have a higher member count?
06-Mar-2015 21:12:25