NDI has evolved since it's debut to become an essential tool in a live streaming tool box. NDI is one of the best ways to create your live streaming workflow. Recently, streamingmedia.com posted a great NDI review and roundup to their blog, that included an awesome video, as well.
Streaming Media predicts that NDI is the way of the future, and will eventually be the industry standard for live streaming professionals. The article recommends that switching over start now, as this will only future proof your productions.
The other great pro of NDI is limiting your cables. With power and control over ethernet, the capabilities your gear will have is unparalleled, and will only require one cable.