I use tags and nested folders intensively, and the info panel is always open on my 15" screen. Unfortunately, the document path is never fully displayed, and half of the tags are missing.
My suggestion is to increase the space for these info. I would like this implemented as soon as possible, because these informations are essential, but in the long run, I think that a decomposition of the info panel into several info panels like in Omni applications (inspector panels) would be the most elegant solution.
Another possibility (like in the Finder) is to Command-click on the window’s title. The popup menu shows the location and can be used to reveal the document or an enclosing group.