When creating work, I mostly do so while browsing iswcnet or sacem.fr and I'll have an ISWC at the ready, having a field to put it up there would make things smoother.
It's not even possible to add ISWCs when adding works by hand at the moment.
Nikki: it's a regression and it is possible with a ticket being fixed already (and with a user script).
I want this back too.
MBS-4727 is in Beta, so I guess it is easy to resolve this issue now.
This is still a big missing stuff, slowing down drastically the ar editor usage with works.