Nobody knows what platform Pikmin 4 is being developed for.
You're also forgetting Genei Ibun Roku #FE and Project Guard/Giant Robot. Last year also had Mario Party 10, Mario vs DK Tipping Stars, AC amiibo Festival, Mario Tennis, Fatal Frame, Xenoblade X, Art Academy and Devil's Third in terms of first party games. Either list everything or don't do a list at all.
Then, speaking only of exclusives:
[2016]
Genei Ibun Roku #FE
Mario & Sonic at the Rio 2016 Olympic Games
Pokken Tournament
Star Fox Zero
Paper Mario
Pikmin 4
TLoZ: Twilight Princess HD
Zelda Wii U
-eShop: Lost Reavers
vs.
[2015]
Animal Crossing: amiibo Festival
Art Academy
Devil's Third
Kirby and the Rainbow Curse
Yoshi's Woolly World
Mario Party 10
Mario Tennis: Ultra Smash
Fatal Frame: Maiden of Black
Splatoon
Super Mario Maker
Xenoblade Chronicles X
-eShop: Fast Racing Neo, Affordable Space Adventures, Runbow
missing something?
2015 digitals are all must-have and from the other, Splatoon, Maker, Xenoblade and Yoshi are really good recived.
Animal Crossing, Devil and Mario Party didnt turn out well, while Kirby and Fatal Frame seems to be solid enough.
2016 so far... we can have an idea about Twighlight HD and about #FE and Pokken (because of the reviews).
Mario & Sonic probably is gonna be similar to the past entries.
Its all up to Pikmin 4 and Star Fox Zero. Zelda probably is gonna be a must-have. Im afraid that looking the last Paper Marios, maybe this one is gonna turn out not great... and well.... we have seen Star Fox Zero, so it have to polish a lot to change the opinion of those who try the demo.
If these 3 end up being a must-have, we still need 1 more to make it equal last year at least... well, with less desapoinment i guess....
about Lost Reavers... what the japan reviews said?
I cant see NX coming this year anymore, if is true that there is still titles unannounced comming in 2016....
... what games from 2015, were announce on 2015 as well?
edit: and
indie games, in my site
, I got more than 150 games listed for 2016... but I dont know from there, how many are exclusive