Is there a way to compress the pages list in the admin panel?

I notice that the list of pages and posts in the WordPress admin panel have A LOT of white space. In a blog with hundreds (even thousands) of pages, this is a pain. Most CMS tools I’ve seen have one small line to represent a page, but WordPress has each row being about 100px or more high.

Is there a way to make the page list smaller? And what about compressing it so that it doesn’t show subpages unless I click an arrow which shows it?

Thank you,
Brendan