As mentioned, the meta-project is really a project that breaks down into multiple smaller projects. When decomposing the project, you will find that it appears to be an endless task - and that many of the milestones or deliverables break down into their own tasks - making it look like you have an upside-down tree. This is perhaps the easiest of the overly complex projects to correct. If, for example, you are creating a television pilot, there are several sub-projects like casting, script creation, market research, idea-pitching, filming, editing, etc. In a case like this, rather than attempting to manage the whole "Television Pilot" project, if you break it up into two main projects - filming the pilot and pitching the pilot - the task will be easier. By grouping similar activities together in their own project, you can avoid feeling as though too many balls are in the air.