We have often said that in Orion, a page is defined as "task + resource." We wish to follow a common page layout so that it's easy for the user to understand where to find the tasks they are interested in performing. In general, the top of the page contains links to other tasks and resources that you might wish to discover, and as you move down the page, the buttons and links become more focused on the task at hand.
The visual layout to support this idea has had to balance this idea of "moving down the page" with conserving vertical real estate. We don't want to take up too much of the page with items not directly related to the content that you are trying to work with.