Within Casper Admin, it would be great to see in perhaps a package properties where the package resides within your file share distribution points. This way you can determine if a package is not on a particular distribution point.
Alternatively, upon uploading a package or within package properties, have the distribution points listed in a tab and checkbox next to each on the package should be replicated to and the status of replication (i.e. Replicated, Pending Save, etc.). Then upon save of the properties or on some trigger, the actions would be taken to replicate, remove or otherwise.