Then Nintendo needs more big guns.
Nintendo is just running into budget problems. Let's say they wanted to do 10 major releases a year on the Wii U, and 10 major releases on the eShop. I'm using major releases as shorthand for a title that excites consumers - Punchout Wii, yes, Steel Diver, no.
For 10 portable titles a year, let's say an 18 month development time frame (this number is arbitrary, I know). That means 1 portable team can release 2 games in 3 years. Over the span of 3 years, we need 30 games, 1 team doing 2 of those, so that's 15 development teams on the portable side to keep up the 10 a year pace.
For 10 console titles a year, let's say a 24 month development time frame (again, arbitrary - but someone has to budget for these things, and they'll be arbitrary too). 1 team, 1 game every 2 years, so the math on this one's easy, you need 20 development teams on the console side to do 10 a year.
So that's 35 development teams. If Wikipedia is right, right now they have something like 14 first party teams and 13 second party teams - they'd need to grow in size by half again, at least. I'm saying teams - really, we're talking a full studio here, although Nintendo can obviously share resources so each team doesn't need to be able to do everything by itself, for Nintendo to keep the hits coming. How many employees on a team? I can't find good numbers for that. What if we've got 50 on our portable teams, and 100 on our consoles - now we're talking 750 portable employees and 2000 console employees. That's just for developing software - never mind your hardware employees, marketing, etc. etc. etc. Looking at their financial report, Nintendo only has about 5,000 employees total now - and you're talking about having 2750 doing just software development.
Plus you're talking about the ability to manage and oversee 35 different teams, keep them on their staggered release schedules, and maintain Nintendo-quality.
So I started off writing this post intending to say, Nintendo should just do it. But it's a gigantic investment - let's just ballpark a developer as being worth $100,000 including benefits (this is low end, I hope for you devs out there). That amount times 2750 = $275,000,000 in salary and benefits a YEAR, or about 22 billion yen a year using Nintendo's exchange rate. For 2013 Nintendo budgeted 55 billion yen for all research and development - that includes their hardware, network staff, etc., so who knows how much extra this is. Enough to pause, anyway.