Is there a "clean-up" function anywhere?
Background:
* I regulary back-up my stuff on my private backup server
* my stuff includes Freespace and thus an archive of my Knossos install-directory
* recently, I have noticed that my folder contains a lot and I was wondering if there was a way to remove the oudated, non-referenced stuff
An example, currently my "FS2" subdirectory of the Knossos-managed folder contains 'blueplanetcomplete-1.0.1' right up to 'blueplanetcomplete-1.1.2', that is whooping nine versions of that mod.
Similar numbers on other mods, like 'BtA' or 'scrolls', let alone MVP.
Do not get me wrong, updates are
GOOD 
but I was wondering though if a functionality to reduce the size of the Knossos-managed folder existed. Shrink it down to what is needed, the aforementioned
clean-up.
It should be possible to compute a dependency graph for all the currently installed games/mods and to remove everything not referenced by that graph anymore.
Thoughts? 
EDIT: On that note, a
verify all that verifies all the installed mods/games in order would be very nice too

.