iPad should see iPhone over Bluetooth, and only one should alert

Having bought an iPad due to a combination of peer pressure and neophilia, I’ve encountered the first major annoyance: my iPad and my phone both chirping when an appointment approaches.

Wouldn’t it be great if the devices talked to each other, and only the one you were using alerted you? Or, if you were using neither but they saw each other over Bluetooth, they could agree as to which device would sing out your meeting invitations?