JBDS target platform zip contains both packed and unpacked artifacts

I've got two approaches now for including the JBDS target platform into the JBDS update site.

a) mirror the TP site - size on disk is 328M and the increase in size to JBDS update site is about 200M
b) wget the TP zip and unpack - size on disk after unzipping is 458M

So... not sure which approach is more efficient given the zip is a single file to download, but it's 130M (more than 1/3rd) larger.

If we can remove the packed (or unpacked) artifacts from the zip, we'd certainly win.