She's definitely is one of, if not the most recognizable mii out there. From Swapnote to Art Academy, to Nintendo's website which showcases her redesign as well as panda and cat partners, to her own game in Japan (I just found this out), to a costume in Super Mario Maker. Nintendo defintely recognizes her, and a lot of fans still clamor for her. Once in a blue moon I stumble upon a myriad of fan art of her as well. 

Nikki's new look (Also probably her reaction to using Swapnote)

Now I know what you might be thinking: "That's cool and all Dravenet, but what does that have to do with anything?"

Well I was looking at the hacker formerly known as Octoling on Twitter. She changed her username to, you guessed it Nikki!

...

That and I stumbled upon this on twitter feed

Happy Halloween! #HalfGenieHero Kickstarter Update #79 is live! And spooky... https://t.co/H6iyF0jOSd pic.twitter.com/ul9Wpza3DI

— WayForward (@WayForward) October 31, 2015

Lol. I don't even know what to say to this other than Ikki clearly Nikki. I know that a backer drew this but this is still hilarious

Holy crap, (N)ikki is a new enemy in Shantae??? x_x She also has glasses, so that's a big plus for me....!

Man, I miss swapnote... I used to exchange drawings with a friend, until it got shutdown... T_T

Really interesting.. I can't draw so I never really used Swapnote, but I do recall seeing that Mii in the tutorials..

But I thought nobody cared about Miis?

lol, that's amazing!

Nintendo should have made Miitomo utilize Nikki. A digital avatar that actually made you feel important.

Well they haven't launched it yet, so even if they weren't going to use her, it would be a good idea to rethink implementing her