I thought of this once upon a time, but came up with some major problems. 1. a company with too many dev teams tends to have problems producing enough "hits" to justify having them all and eventually closes studios down. Devs have seen this and I think are reluctant to be part of such a deal. 2. Again, without being able to guarantee all your games are going to be "hits" then the financial burden of not seeing a return for all these self funded games becomes quite heavy. I think Nintendo's best bet is already in the works. They're next platforms (PLURAl), both handheld and home, are going to have dual development schedules. They're going to maximize the efficiency of their dev teams by making it possible to develop single games for both of their platforms.
As it stands now, the majority of their games are either produced for the 3ds or the wii-u. Now imagine that last years game drought on the wii-u was quenched with games like luigi's mansion, kid Icarus, and pokemon x&y.
Now for the expected retort "why would Nintendo create a competition between it's two platforms? won't that hurt it's cumulative sales?" And while I believe the short answer is yes there is one variable that I think is going to make a big difference in this strategy; demographics.
i'm not talking the usual age, region, gender. I mean philosophical consumer demographics. I would go into it further, but this post is already a bit lengthy. I will say one thing real quick though. I think you're onto something about them having powerful machines next gen. Not so much the home console, but I think the handheld is going to have to be able to keep up with the home console, and that might be asking quite a bit from a handheld. Then again, the vita is doing fairly well with it.
