Here's all the news from the Direct. Not much to write home about. Some gaming news but not much other than that. Star Fox release date, The NEW 3DS will get SNES VC games because apparently only IT can handle the awesome processing power of a machine that originally came out in 1990 and had a cpu that ran at an awesome 3.58 mhz. And it's looking more and more like Nintendo is going to do with the the next Zelda game what it did with Twilight Princess and intentionally withhold it from the market and port it over to the NX.
http://www.polygon.com/2016/3/3/11157710/nintendo-direct-march-2016
That isn't cool for Wii U owners but I hope they release the next Zelda game on both consoles. I got very close to buying a Wii U this year for Mario Maker and a couple of the previous games I missed but in the end I decided it would be a dumb decision to buy one when they were already talking about NX.
I'd say it's pretty likely that I'll grab an NX at launch especially if it has backwards compatibility for the Wii U games I missed and the rumors about it being a home console for your TV and a 3DS replacement in one device turn out to be true.
If there is a big, open-world Zelda game available for the NX at launch I would feel pretty good about getting in with a NX from the beginning.