I hear you. That is a problem with a lot of (bad) UIs and why I think people love text-UI (because it is harder to screw up). First, I don't want to get rid of the text UI -- you can always render your commands using the traditional terminal interface. We just want to provide an option to display the output in a richer way. I think Github does a good job of this. You can view a file with line numbers and annotations on the side, but copy/paste won't grab that content because of how the HTML is structured. We hope be similarly attentive to things like that (but of course it is still a WIP).