Feature idea for card layout: make the card assume the color depending of the first category (e.g. next = yellow, working on = red etc.) or an app reference (deliverables of product A = yellow, deliverables of product B = red etc.).
Inspired by kanbanflow.com. Like coding = red, design = green, documentation = yellow etc. Then you can show different categories in columns (like next / today / in progress / testing / done / dismissed) and in rows (like priority levels). One more dimension adding design and context without cluttering the lean card view with more text.
I would most love to use it for app references, so that in a card view with status columns (later, next, in progress etc.) and priority rows you see which cards belong to one project or deliverable or product and which to another one.