Surface only the information that you care about by clicking the little "plus" button in the top right corner of your subscriber and email list views. You can add and remove columns to your heart's content.

Your trenchant response to this news might be "well, Justin, I care about information that you don't even have columns for, like subscriber quality or email click rate." To which I say, "yes, of course, but first you build the new architecture and then you add all the fancy new columns to it."

(Which is to say: it's coming soon! If you have other ideas for columns you'd like to see, please add them to the roadmap.)