Well, Murozond is something that's going to happen eventually and quite frankly what better time to do it than now, alongside with Infinite Dragonflight wrap up.
These are very obvious options that may happen. After all even in preview we got bits and bobs about Kalec, Alextrasza and Ysera's brat, but Bronze lead was pretty absent.
Primalist set implies that we will deal with proto-drakes and Galakrond-like threat of some sort pretty much from a get go, which should leave another half of expansion for Bronze/Infinite Dragonflight mess.
But on the other hand, who knows. It may end up being Jailer 2.0 too with some one off big bad with little backstory.