The discussion between WMF multimedia team<->Commons/GLAM communities has happened in a few places (various project/user talkpages, glamtools@, personal emails) and to be honest I've lost track of it, so I'm not sure what the outcome was.
Uploads seem to have been restarted per https://commons.wikimedia.org/w/index.php?title=Commons:Batch_uploading/NYPL...
We just had a brief imagescaler outage today at approx. 11:20 UTC that was investigated and NYPL maps were found to be the cause of the outage. Besides the complete outage of imagescaling, Swift's (4Gbps) bandwidth was saturated again, which would cause slowdowns and timeouts in file serving as well.
I found 7396 NYPL Maps in GWToolset's queue under Fæ's account and subsequently removed them as of approx. 11:51 UTC to restore site stability.
I've notified the NYPL Maps project of a requested pause with: https://commons.wikimedia.org/w/index.php?title=Commons:Batch_uploading/NYPL...
Regards, Faidon