Another thought occurred to me…
if you could set up a naming convention for the source files…
you can then make the soucre material in PPro offline and then relink to the new media in a different folder but with the same file names…multi-relink is certainly doable in PPro.
it might be useful to patch rename the previous source files as _off to make sure they don’t inadvertently get reconnected…
but I bet there are any number of ways you could handle the automation of source file naming..
another hint is that I’d keep the source file folder flat…don’t use subfolders within that folder….just pile all the source clips in one directory to make it easy for PPro to discover…
hth,
Alex Udell
Editing, Motion Graphics, and Visual FX