"Did Splatoon have any effect on your decision to buy a Wii U?"
Nope.
Got the Wii U way waaay before Splatoon was out.
"Did get you interested in the prospect of Nintendo's next hardware, The NX?"
Nope.
What will is a traditional 3D platformer of mario (galaxy,sunshine,64), and a Zelda game though.
Maybe some real paper mario games? you know the basic turn based rpg ones? yep that would help too.