Will it be any slower than what it is right now? (No offence to Scifi, I think this is a good first step). Call the contact, disconnect and then call the calling card, then send the DTMF tones with the pause? I dont think so.

The beauty of systemwide priority is that I dont have to think and tweak every time I am making a call. This way I can specify if I am connected to my asterisk server route all my call through that, or if I am have skype connectivity route all my +44 calls through skype, if not use my CC to complete the call and never put a +44 call on the cellular network.

Here is what I had originally suggested, in my view CC is just ONE of the aspects of call routing, what I want is a way to tell the system how to complete the call depending upon what type of connections I have and what type of connections the conact has (advanced feature). I spent some time thinking about it and felt that all the features I was looking for could be integrated into VICaR since the basic framework is already there. I want to make this or some other application the call routing brains of the phone and utilize the plethora of connectivity options given by this phone to the fullest so that I dont have to hit multiple buttons for making the call, the system does it for me based on my preferences and in future based on what options I have specified for the contact.
Hope that made sense!