Clan Challenge: Timeframes

I would like to see the timebank/timeout on the clan challenge screen with the drop down boxes, when setting up a clan challenge.

I would also like the facility to block any challenges of a 1/0 timeframe.

I wouldn't mind if it was just my rating that was affected but as clan leader you are responsible for setting up the games of other clan members. Currently it is too easy for you to accept a challenge with in an inappropriate timeframe and therefore antagonise your fellow clan member.