I wish there was a way to have multiple lighting designs in a single HDR Light Studio project, so I could easily store and quickly compare/edit multiple lighting looks. This would really help my workflow. You could call it - 'Light Looks'.
Yes, that seems like a good idea. It could then perhaps also be used as a sort of versioning system for the different feedback loops with the client. So that in the case they want to get some lights back from an earlier lighting preview, that it wouldn't be a problem.