There will be an Old God, right? even if not to kill, but a new face to our great enemies would be nice. I feel like Yogg Saron was wicked intelligent, cunning and terrifying(from a lore point of view)But most of all, he had a pesonality, unlike C'thun who was just a thing. Listening to the Yogg Saron audio, I was amazed, though I never fought him yet. Then I thought about it, Old Gods are more powerful then anyone we ever fought, but why were they never the main boss/theme boss for an expansion? Its because they aren't Iconic like Illidan, Arthas and Deathwing. And before Yogg, not much was none about them. Yogg Saron changed that, he put a face, a voice, a fan-base for them. I think After Cataclysm, that they have so much exposure that an Old God can be the new Theme'd boss for an Expansion.
Thats why I hope theres atleast a new Old God, if not to kill, but to be a huge pain in the ass that by the end of this expansion, you want to kill him. So yeah, is there an Old God?