Clearly slashdot's common sense quotient has passed its apex with the number of up-mods on this. Snowden didn't download the full NSA database of everything. Ever. Nobody in the NSA has that level of access. Nothing like that likely even exists at the NSA.
Really, it's quite impressive the knowledge you have of internal, top-secret NSA operations. How exactly do you come up with this information?
On top of that, it's pretty widely known that Snowden didn't use just his own credentials to download documents. He accessed several different high level accounts. Between the lot of them, it's entirely possible that he could have accessed everything, or at least the vast majority of data.
Snowden's gone. He's not part of current operations. Who is to say that after he left, the NSA decided to embark on a new intelligence initiative. I know -- it's shocking, but organizations sometimes continue to function and do new things after someone leaves it. And that person, no longer being part of the organization, will know nothing of them.
That doesn't make his old information irrelevant. It just means that any new program which we don't know about is even more of an overreach than all the stuff they've been doing in the past.
The data he stole doesn't offer that kind of granulated access... it's like he shoplifted a library, but all the pages in all the books are ripped out and thrown in the middle of the room. Without the organization and analysis of the data, it's largely useless anyway.
How do you know what he stole? You've never seen it. Maybe it's files organized by folders with very descriptive names, readme documents explaining exactly what's in each folder, all signed and verifiable with a public NSA key. Maybe it's a dump from a database like SharePoint, that embeds documents into the database, rather than pointers, and all the descriptions/categories/other....ahem...metadata, are right there in the SQL, organizing everything exactly as the NSA had it set up.