Feature Request on DWG Import

I would like one simple feature on importing DWG files to do the following: Present a dialog box with one text field that the user can type anywhere from one to several ASCII text characters in to be appended to the beginning of the name of every layer of the imported file. For example if the user typed “Site-” into the field “Layer0” in the original DWG file would become “Site-Layer0” after the import. That doesn’t sound like an unreasonably difficult task to implement, does it? It may even be easy enough for someone to write a plugin in an hour to do it.