A story "built for lore fanatics"? What does that even mean. Some lore-savvy people like myself are just excited over the potential because this theme (old gods, deep sea, Azshara) has been around forever in WoW and never been fully explored. That's all. Trust me, the story will be presented in an exciting fashion and will be easily accessible, it always is.
No. It's time they stopped throwing a new class into the fray every other expac. Balance is finally working right now, they're getting it right. That's not to say there won't be new classes later on, i'm sure there will be. But not this expac, we'll get something else (like sub-races) instead. And if it is something along the lines of sub-races, it will change WoW completely on the visual side of things.