Miiverse is officially down as of November 2017.  Now, just because many people including myself have started playing the Switch does not mean we cease the usage of our WiiUs, they still hold an important place in our hearts and taking down MiiVerse has taken away so many of the games' features on the console.  Here is a list of game that have been effected:

-Mario Kart 8

-Mario Party 10

-Super Mario and Luigi U

-Super Smash Brothers 4

-The Legend of Zelda: Twilight Princess HD

-The Legend of Zelda:  Wind Waker HD

-Dr. Luigi

-NES Remix 1&2

-Splatoon

-Game and Wario

-Countless Other Wii U and 3DS Games

So, conclusion?  If this succeeds, we'll be able to play our favorite Wii U games just the way they've been and are and if this fails, the Wii U is doomed to be ruined.  The loss of Flipnote Hatena for the DSI was bad enough, but losing this, too is just as bad, if not worse.