I absolutely love the new Roadmap view, but my one critique is that I feel like it doesn't scale well when you have a lot of items.
IMO, I feel like the design feels really squished, and the scrolling-within boxes feels awkward. If the items line up with the bottom of the box, you might not even realize that it's scrollable.
It's not entirely clear how many items are on each list (a total count would be great too!)
It seems like it would work much better if all three lists just flowed naturally down the page rather than scrolling within their own boxes.