P: "Multi paste" feature in Lightroom?

I work with 1000's of pictures at a time. I process images in bulk, as many are under similar lighting conditions. When I copy the edit settings from 1 pic and paste them throughout a batch, I have to wait for the process to complete before I can start my next pasting job. Could you build a feature that stores "copy/paste" settings in, say, five or more 'slots' of 'copy/paste memory' so I can run several batch pasting processes in async mode? I see that "Export" and "Paste" operations can run in parallel. Multiple export sessions can also run in parallel. Something similar for "Paste" would be nice.