For instance, I hope that they keep going with weapon properties - they have an opportunity to make combat really in depth for fighty characters. I think there's also opportunity for out of combat stuff too, like using a dagger to jam open a lock or a war hammer to bash a dungeon wall down.

I hope that we don't see the homogenization of spell lists like what happened to PF2E. Paladins get their powers from distinct sources from clerics + have a totally separate class fantasies. They should have unique spells that reflect this, like we currently have.