It'd be really useful to have a librarian tool that can clone an existing edition, so that you get a new edition with the ISBNs, ASINs and mapping stripped out but all the other data present.

It'd make multi-creator works so much easier to deal with, and GR imports are often missing a lot of that kind of data - it'd be faster to clone and then attach the mappings. Also much faster to deal with variant covers that currently need their own HC edition.