Plan 9 is a research platform for programmers, not a product. As such, your questions don't make sense. Everybody maintains their private trees because this is the way the system is supposed to be used. Plan 9 has a philosophy, but not a direction. There's no single roadmap. At least not anymore.
Legal issues in the project? Unlike a particularly successful free software project, the Plan 9 community cares about code and not about licensing. -- Aram Hăvărneanu
