Practice mode and editing

It would be absolutely amazing if there was a way for clans to practice inside of themselves. For example if a friend and I got together and were able to attack each others base (preferably without losing troops) to check defensive structures as well as offensive strategies. It would allow clans to be more fun and stronger. Also, as the leader of a clan it would be nice if i could remotely edit another players base if they granted me permission. I have several guys not close enough for me to edit their base but who really want and need my help. If they could grant me access as the leader to edit their base for them, that would be most helpful!