I do agree that the vertical space is to much.
In situations like these it is often the small details that complete the design. I guess that it is controlled from a central CSS so it should be able to fix / experiment with before the final release.
Also - I noticed another place today while testing the BETA was the doctype editor (umbraco/#/settings/framed/%252Fumbraco%252Fsettings%252FeditNodeTypeNew.aspx)
- It is very difficult to see that "Choose..." is a button or a link that the user can use.
- The Allowed Templates legend is the only thing spanning the entire page - would make sense to use the same with as the rest of the elements
- In the "Generic properties" tab it is very difficult to seperate the different parts of the page, all of the text is the same color and it is hard to know where to click
Im a big fan of the "text as UI" conventions being used these days - but as the case of vertical spacing - I think every screen should have a review.
Keep up the great work!
Best Thomas