If you feel the same way, here are some classic fitness themed costumes that I found that you can use for your next costume party! (infinitelifefitness.com)
Zombi U, Ninja Gaiden 3: Razor's Edge (which Nintendo themselves published on Wii U), Bayonetta and Bayonetta 2 (which included sexy Nintendo themed costumes for Bayo 1), House of the Dead Overkill and Manhunt on Wii, etc.. (n4g.com)
New content is thin on the ground here — it's all about the technical improvements — but there are also some Breath of the Wild themed costumes included for Link and Zelda. (vg247.com)