Aside from the stuff that’s already been said (mobile first and foremost), a renewed emphasis on local libraries. So the UI overhaul, a usable frontend for room correction (I personally don’t care if it’s Dirac or not, and would in all honesty prefer that it wasn’t), “party mode”, things like that.
Valence is all fine and good, it’s a massive undertaking, and of course streaming is the future, but between 1.6 and 1.7, I’m starting to get a sense that Roon is focusing a bit too much on being a fancy front-end to streaming services, and I’d really welcome progress that shows there’s more ambition than that.