I'm not the most experienced Adam, so take this with a grain of salt, but sometimes it isn't choosing NAT for its effect as much as it is choosing against having ABR at the start. There are a number of match ups where you would sooner not be forced to run against your choosing (i.e. pretty much anyone with HHN).
Also NAT combined with Find the Truth can get you to a game state where you have near perfect information of what's in the corp's hand. In the deck @conphas posted, Corporate Defector does a ton of work as well. Find the Truth shows what the corp will draw with their mandatory, and assuming they have no draw cards, clicking to draw will trigger Defector, which puts them in a position where they can't really advance their board state without surrendering that juicy information. Having NAT just helps you capitalize on that knowledge, because once you know an agenda went into HQ, it should be fairly easy to pick it out.