[feature proposal] dual-SIM dialer with 2 buttons

More and more phone are proposing dual-SIM functionality. This is very useful for various reasons. In stock Android the functionality - decide for each call what card to use - has been made available in a bulky way: The user needs first to dial/chose the number, then press the green button to start and additionally to decide subsequently what card should be used for the outgoing call.

For the case "decide for each call what card to use" it would be much more useful to have a dialer simmply with 2 buttons to start the call. This would save one additional step.