I apologise for my ignorance, but, what is the advantage of rebuild one edition that is already available?
One reason would be, learning to construct reconstruction builds, as close to official builds as possible, then use this info to build non official builds.
It has not always been available for ex u n e whether download or n finds but has a core or a professional, this you can rebuild for an burning that many do not have the burial and you have not found anywhere, just knowing how to rebuild and learning