I agree with the idea that Nintendo`s money is better spent on exclusives that paying for multiplats. Overall, it`s a reasonable idea. Especially at this time when the usual ports of big 3rtd party titles didn´t really make a lot of money on Wii U.
Nintendo could pay for the ports. Surely that would cost them much less and would fill the library.
But the truth is, that wouldn`t Wii U stand out for the core gamer. They can already get those titles - and the better versions of them - on other consoles.
Getting exclusives might, in the long run, turn Wii U into a seriously attractive console for MS and Sony users: they get the usual 1st party titles and then core games they can`t find anywhere else.
Heck, ZombiU outsold both CoD games on Wii U.
Of course, if Nintendo could get more 3rd party games, that would help too!