There's all this blank space to the left of the comment. Some of that could be used for bigger arrows. Or some of the buttons on a comment could be hidden unt

There's all this blank space to the left of the comment. Some of that could be used for bigger arrows. Or some of the buttons on a comment could be hidden until you tap the comment. (And you can do it in CSS if div toggle is an offensive amount of javascript.) There are some low-hanging fruit that would make the experience better. It's fine but it's not great.