They just did. It is called Splatoon. 

One in 3 years is nothing to write home about, two if you care to count wonderful 101 is still absymal.

You didn't say Nintendo should start dishing out new Ips every year, you said this. 

"There is not to much wrong with Sequels, but once in a while you should not purely be depended of a sequal of a serie. Sony killed of Jack and Daxter and brought something entirely new to the table. I for one would like to see Nintendo do that, for instance put Mario Bros away for a while and make an entire new serie. 

Yes I also do realize Sony got Bloodborne, LBP 3, The Order, Driveclub and Knack as new Ip's and MS got Ryse and Sunset overdrive, while being released one year after Wii U. My second statement, which I bolded for you was about games which are worth buying on Wii U in 2015, so far Splatoon only comes to mind. While the PS4 has Bloodborne, Pcars and the Witcher 3 among a few other games which can be considered good, that's called choise one thing the Wii U has never had during it's lifespan. Another flaw since 3 month droughts where not something rare in it's early years and guess what they still are.

For me once in three years is a bit more than once in a while, perhaps for you it isn't, since at this rate I doubt they are going to make 5 new AAA IP's for the Wii U.

Sony deserve Vita sales with no support.

Nintendo marketing team deserve to be fired.

Vita doesn't deserve good sales because of the memory cards? After that I stopped reading...

The device itself was already expensive, but justified due to the much stronger hardware, but to add €50- for a bit decent memory on top of that was ridicilous, I also assume you missed the part about no support from Sony, how could you not if you stopped at the first sentence.

You know, the Wii U only has a tiny bit of new games if you take away most of its new games.

Meanwhile the other guys have really new games like the 10th Mortal Kombat game and the third Witcher game