I don't think this is a smart move..... at least for, "b-tier" games.
Ex: fantasy life (and crappy sales on october 2014), and fire emblem awakening (good sales on february 2013).
"Small games need their spotlight".
There is other reasons like:
Only looking for 2015 Schedule.
Money: if i am pretending to buy, Star Fox Zero, Xenoblade Chronicles X, Yoshi's Wooly World, Zelda Triforce Heroes. I can't afford thinking about buying games like Mario Tennis Ultra Smash and Chibi-Robo Zip Lash.
Time: Even if i am a rich person, buying all those games. I will probably skip Xenoblade Chronicles X (on december, because i will still playing other games. and doesn't make sense buying a Giant JRPG when you have other games to play[size=78%])[/size]
WiiU and 3DS isn't a blue ocean case.
The main audience for both systems are "hardcore players". And they play games, all the time. A game like mario tennis ultra smash, maybe have a chance for these nintendo fans who doesn't have games to play on june and july. Despite that games looks a bad port for the 3ds version. Mario tennis is still fun.