I'd like (and have asked for) mods on both sites to chime in, but this isn't looking like a good idea at this point.
Stats are pretty clear, 52% of all moderator initiated migrations from PSE to The Workplace (as obtained on The Workplace) have been rejected. That's moderator initiated, which often entails a bit of collaboration and sanity checking with the mods at TW. Or, basically, being as careful as one can be not to send over something likely to just be closed.
I don't think opening up a migration path would fare much better, probably a bit worse. In theory this sounds like a good idea because you do have overlap when it comes to the types of career oriented questions that PSE doesn't really want - but that's icky.
For now, I'd rather that those questions just continue to be closed here as warranted, and leave it in the hands of the moderators on both sites to migrate the occasional gem that might have a better chance there. Even then, historically, we only get that right half of the time.
I'm declining it for now, but I'm open to revisit later down the road.