First... who cares about the PS4. It's like getting excited about buying a 3 year old computer. My money is on the Xbox 720 if anything. At least Microsoft tries to innovate.
Second... Let's go through some of the "Wii U" saving games you mentioned:
Yoshi's Yarn - Oh wow Nintendo, another Yoshi platformer. Haven't seen that before
Wind Waker HD - Oh wow Nintendo, bringing a gamecube game to the HD world! Way to innovate.
A new 3D Mario Game! - Is this 1996?
Mario Kart U - Do I even need to say anything?
Smash Bros 4 - Stop it with the sequels... PLEASE
The same old tired franchises being used OVER and OVER again which are basically cliché’s of themselves.
If this is your idea of Nintendo's saving grace... then you are in for a rude awakening.
ok I understand your PS4 point, but I really want to remain neutral on other consoles right now.
Yarn Yoshi: Oh Wow! Nintendo is FINALLY giving us a new Yoshi Platformer. Haven't seen that since 1997!
LoZ Windwaker: Oh wow! Nintendo is pulling out all the stops and pushing the Zelda series in their next new installment that they felt the need to give us a gamecube game rebuilt from the ground up in a new art style they were experimenting with. Clearly this means they are taking the long-term innovation of the series seriously.
A New 3D Mario Game: oh wait we really have only had 5 of those ever dating back to 1996 Each of which (minus 3D Land) brought something very unique to the table (counting the galaxy games as one) and hae been released at least a few years apart (cough Assassin's Creed/Call of Duty)
Mariokart: Ok yeah, step it up here a little bit Nintendo. If this game is supposed to be one that we keep coming back to over the course of the console cycle them give us new reasons to play it and make it feel more polished than Mariokart 7. I am curious to see what they can do with it in HD.
Smash Bros 4: cuz no other fighting game in the history of ever has had a sequel (Mortal Combat 9, Tekken 6, Soul Caliber V, Street Fighter (whatever number we are on now)
what happened to X, Fire Emblem x Shin Megami Tensei, Pikmin 3, Watch Dogs, Assassin's Creed 4 (yeah I bashed the series earlier, but it sells so it works for this argument), Bayonetta 2, Injustice, Call of Duty 2013? Because you know there are so many more of those 5... YEAH ONLY 5!! old rehashed games compared to the 8 I just mentioned here