Yeah, I have no plans to create a templating language like that. But, when this lands:
It will be fairly easy to create your own live templating languages / behaviors. Live is the extracted bits of can's live-binding to computes logic.
You can run through all the elements in the template and wire them up like:
live.attribute(input, "value", compute)
input.onchange = function(){
compute(input.value)
}