Hi, your software copy only the used asset on a new project, is right ?
Can he check if a reference is used in cpp code ?
Do you think its possible to have a function to add your list of unused asset on the list of unpackage file ?
Because some assets are in my project for future release and not the actual one, I dont want to have a second project without (and I use Perforce) . I just want to reduce the size of the packaged game. 
Thank you !