At the very least it would give him a platform to defend himself from the criticisms he receives (instead of preaching to the choir) and if he were to flub on a question TV stations could at least replay that all the time (no more complaining about a "blackout" due to lack of anything interesting).
I'm sorry but an interview that is basically rehashing everything said before, without even attempting to take a critical view, is not interesting
Furthermore it would compromise his position that his main motivation was to inform his own citizenry if he starts commenting explicitly on foreign intelligence agencies.
He did say that.
He even went further and compared his actions to Manning's, making clear that he [Snowden] had been careful to be very selective in what he copied out of NSA.
Whether stuff is being filtered further by journalists is irrelevant, if we're seeing it on the news it's because Snowden claimed that it is important enough for the American public to see as to outweigh his oath and the possibility of damage to the U.S.
I also liked the bit about Obama challenging him to come back to court, and his smart rebuttal.
How?
Edit: I found a transcript. http://www.ndr.de/ratgeber/netzwelt/snowden277_page-1.html
Because somehow that story didn't seem to gain as much traction. Of course, nor did it stop Snowden from leaking details on targeted spying programs too.
#edit hellban request denied then, I guess. Thanks idiots, it's your site afterall.