Sales wise? for sure it's a good decision, even if it won't pull out numbers as the wii series it will please their core. So they will be entitled to continue to buy Nintendo machines to continue to play their favorites series.
On the new IP side, Nintendo continue to pull some: Wii Party is a new IP for exemple. But here it's funny how the people dismiss the wii series as they don't appeal to their "hardcore" taste.
Last, the long gaming history f Nintendo is a gift and curse to them. A gift because they have some beloved series that granted them a strong core (Mario platform, Pokemon, Zelda, Kirby,...) and a curse because their fans want them to put sequel of most of their IP, and with their current size. It's impossible to pull out new iterations of the old IP and create some news.
But we must first concentrate ourselves on the way to entertain people, for video games to live. Else, it's a world where sales representative will win, which has as effect to kill creativity. I want to say to the creators all around the world:"Courage, Dare!". Shigeru Miyamoto.
