The catch with the current purge tool is that an Admin has to run it and the Admin didn't make the CAD data. The catch with the Delete command is that the whole dialog is littered with weird nonsense language and you can't easily run it on more than one object at once. I propose that within the boundaries of the ACL's the user should be able to execute a purge/archive in a simple way themselves without having to rely on admins to clear the storage or expand to pentabyte SANs in a couple of years. ProjectLink's purge function simplicity perhaps with a wizard in place with options such as 'purge parts without drawing relations, purge my stuff, purge this assembly and related' etc. Maybe the purge can be two stepped, the users flag the data as being purged and dissappears from the users point of view and then the admins can move the stuff off to cheaper archive systems later on.