I wish that SuperCell changes Clash of Clans so when one person is attacking and another device connected to the same account, the other device would be informed "sorry, other device is attacking using this account" (something like that) instead of a notice going to the attacking device, consequently ending and screwing up the attack. Of course, it would only be like this when a device is attacking, if it isn't then the message would be sent to the original device.
