A CSS panel to preview the CSS of a selected element. It would be super handy when using Webflow as the HTML layout and design tool for larger apps built in Rails, Node etc. All the other screen design tools support it, Invision Studio(as seen in the demo video), Invision Inspect, Zeplin, Framer, and plugins for Sketch do it too in the handoff process.
Webflow comes so much closer to production code than all of the aforementioned tools except for this tiny feature. Exporting the whole zip file, hunting for the tiny block of CSS from the single generate CSS file, converting it to SASS and then pasting it back into the project is process that can only be described with several expletives.
Do it Webflow, I know you can.