I'm ok with it being a stuff pack, but it is a little sad since all three of the suggested career options were quite popular but only one will be in a stuff pack. Although lately the stuff packs have introduced new or upgraded systems with some actual meat to them. Moschino had a whole freelance career but also all the new pose and lighting options for photography, with multiple new backdrop options and digital frames. Nifty Knitting has not just the knitting skill but a whole collection of craftables to unlock, the plopsy mechanics, and the rocking chair with different animations for different age groups. So we will get more than just a career... but it would be nice if we could have gotten all three. They all sounded cool.
I would like some upgrades in the game to occults in general, such as lot traits that attract or prevent occults, traits that change how your sim feels if they meet an occult, clubs that allow for "any occult", and I'd love something like odd jobs that your occult sims could take that actually require powers to accomplish. And some actual powers for ghosts besides breaking/repairing things, passing through sims, possessing objects, and changing colors. Maybe a stuff pack could add some of that, maybe not. But I'm looking forward to finding out what it does have.