It would be cool if your team could integrate a tool like TeraCopy to enable multi-stream copying and renaming of files. Photo Mechanic is a great tool but needing to sit and wait for a very long time to copy hundreds of fotos sometimes is not as fun - at least in my workflow.
I will test copying pictures over and then ingesting with renaming in place, is that possible? This way I can copy all the pictures to where they need to be and then just rename them using Photo Mechanic and then I can cull through them.
Ingesting is already threaded. I'm going to turn this ticket into a support ticket so that someone can work with you on your workflow to see what may be slowing you down.