You could create a BingFarzPerl?

You pick/choose which modules to exclude using http://www.cavapackager.com/appdocs/projecttree-scan.htm

You could also use scandeps.pl to cross/reference and make sure you're not missing any modules

But don't count on saving much/if/any harddisk by excluding modules -- the dependency scans are pretty good , won't add extra files, might miss a dll here or there