That would be nice, but do you recall that it is usually the architect who hires the consultants (structural, civil & MEP) and not the other way around? We cannot dictate to them. Do you see the problem here?
Create, saveas, copy to multiple folders, open in multiple versions, and save.
If you want to talk about moving forward, that sounds kind of cumbersome and antiquated to me.
Let's really talk about moving forward. Why doesn't Autodesk create a utility to save families UP? Part of it could operate similar to the conversion routine for AutoCAD: pick the files and the version to SaveAs. You could set options to save the upgraded versions of the family file to multiple locations. Ex.: save the v2008 version to Folder A, save the v2009 version to Folder B, save the v2010 version to Folder C, etc.
If you really want to talk about moving forward, then do it. If we do it your way with the multiple installs, then we are still left with a very tedious process. If you improve the car but don't design better tires, you shouldn't have wasted so much money on the car.