That is exactly why I'm confident that StarCraft 2 is going to be a great game.
but none of their games ever had any real depth
I'm taking the position of a heretic here : The less depth, the better it sells ?
Polished they are, yes.
By the way, bought yesterday WarCraft II as an "Exclusive Edition" yesterday on a flea market. I guess it was some kind of what we call nowadays "Collector's Edition".