I like the new project/build hierarchy, but I think the terminology is somewhat confusing. We have a project, which can consist of several builds, and then Bamboo tracks several individual builds for each build. Similarly, there's a project summary page, which lists all of its builds. Then there's a build summary page, from which you can jump to individual build result pages.

So it seems like its hard to distinguish in the terminology between a build (part of a project) and a build (individual, numbered result).

I'm not exactly sure what would be better, but I do know that the word "build" usually implies an event, not a long lived object in a hierarchy. So I'd like to use a different term for the builds that are part of a project in the hierarchy – perhaps something like "sub-projects" or "components"?