Mass Effect Andromeda, God of War IV, Titanfall 2. Three big games will release Q1 2017. Two of them are likely to be March releases and the other one February release, all of them major franchises. Mass Effect has a massive fan following, God Of War has a big fan following and Titanfall sold 5 million units without a PS4 version, but Titanfall 2 will have a PS4 version. That's not to mention that Horizon if delayed to 2017 may also be a Q1 release and it will have hype.
If gamers on other platforms have enough to play on their current platforms they are unlikely to buy the NX. Not speaking of Nintendo gamers but to achieve success Nintendo needs new fans. If Nintendo can convince EA to release their games on NX at launch, it may be fine. But EA's support is necessary for any console to succeed, take a look at the past if you doubt it.
Also if Battlefield 5 and COD IW release this year, the latter has already been confirmed, Nintendo will need these games on NX at launch, although a holiday 2016 release would have been better for the same reason. COD IW will probably come to NX but Battlefield 5 will be important, as will Madden 17, FIFA 17 and NBA 2K17. These titles are system sellers for casuals which is a very important market.
With a release date as far as March there impact will be less even if they make it to launch. That's why I think March 2017 isn't the best time to release NX.
