I just updated yambs.erat.org to add support for seeding edits against all of the recordings in a release.
To add disambiguations to follow the live recordings style guidelines, you could set “Source” to “Edit release recordings”, enter cf731f61-d8ba-438a-b346-644456fd27e2 as a release MBID, and then enter the following data in the textarea:
disambiguation=live, 2008-12-07: Rose Garden, Portland, OR, USA
edit_note=update for https://musicbrainz.org/doc/Style/Recording#Live_recordings
To update artist credits to follow the classical recording artist guidelines, you could enter release MBID 6d71e03a-a7d6-4c4d-a645-b279b8a07b77 and the following data:
artist0_mbid=2fcffd9a-f02a-4a2c-8085-6257f918949d
artist0_credited=Pau Casals
edit_note=[Style/Classical/Recording_Artist]
Please let me know if you give it a try and run into problems (either via the issue tracker or here).
(And just to mention it, I suspect that there are also userscripts that editors already use for these sorts of tasks, in case that’s more your thing.)