Would it be nice if all the content from FM was in the original? Of course!
Does it make sense to expect that kind of content? No! Here's why. And yes, I understand this is all my opinion, but anyway;
The majority of the new content for FM2 was stuff that looks to the next games in the series. With all the extra cutscenes, the real interesting ones of which are from the past and explain the nuances of the game's story, the Terra boss battle, and if you will; even the cave of rememberance itself was about sharing information that will definetly be explained in the future games. So why do we want the extra content of future games in the current game?
What it comes down to is that no video game company will consider adding hints at future games in a game that they are currently working on. The focus is on the project at hand, and Square Enix is no exception.
That we expect FM quality from the original is probably just a testament to their high standards in their past products.
This make any sense? As I realize now that I've been rambling for awhile... So, Yeah... I voted no...