[CognitiveLens]

I like that you've been relatively conservative with the redesign and have clearly relied on established convention so that existing users can carry over their existing experience into the new UI.

I think it could use another fine-grained pass over each UI element to evaluate how important it might be to the user and whether the contrast/size/color/prominence of the element matches your expected prioritization.

For example, the numbers along the side are large and high-contrast, but are pretty trivial for people browsing articles (ordering is meaningful, but specific numbering isn't). On the other hand, commenting is a big part of HN, but is a very small and low-contrast part of the mockup, with no visual indication of how to access the comments.

I'd also have another pass at the color choices - white on orange and mid-gray on mid-gray can be pretty difficult to scan.

Great thinking on the filtering and top-level organization, though. There's some good stuff in there