As a game dev of some 10 years, I personally admired Iwata's philosophy on game development, he really cared about the industry and tried to protect it as a whole. He was a developer, like myself, with similar passion for our craft. From a company perspective, I feel like Nintendo is much like Apple, very closed or introverted, and when they come up with a product, typically it is of the highest quality, regardless of whether sells well or not.
However, what has been clearly lacking at Nintendo in my view is the push towards better visuals, which implies better hardware with more muscle. This is really the only thing I would change at Nintendo, and I believe this is how to win back the 3rd party support. In my humble opinion, this was the #1 reason why most 'current' gen games simply could not be ported across all 3 platforms, as well sticking with a different cpu architecture.
I leave you with my favorite video of Mr.Iwata, a speech at GDC 2011.
https://www.youtube.com/watch?v=EcAHJHnvd9A&list=PL0E7E2B9DE840F797
rest in peace,
-M
