A few thoughts:<p>When on the comments page, I'd expect tapping the title to take me to the article, but it doesn't.<p>The child comment touch target is all the way to the far right, which is at the edge of the touch region on the new larger phones. Feels a bit awkward. Maybe make the entire comment the touch target for that?<p>Not a fan of the big black back arrow. I know it goes away, but as you scroll, it is right where you want to start reading, and feels a bit distracting. Maybe just tone it down a bit?<p>There's a little bit of stuttering as you scroll, which is surprising for a text list. I'm guessing it's a bug rather than actual performance issues.