RIP Iwata.
He seemed like a smart and passionate good guy in the industry even if business tactics were iffy; he'd sometimes be risky and get high rewards if he hit the nail like the Wii or Amibos (Well Amibos weren't really risky), but other times he was extremely conservative (like with the system lineup, securing exclusives, system prices vs power levels). But yeah, 55 is way too young

This seems like it's going to have a huge effect on Nintendo's strategy. Iwata was very Iwata, and there's no one like Iwata. He'd stick with the ship on stuff like Wii-U, he'd pump money into games that will bomb just to expand the roster and fund developers he respected like Monolithsoft, he was pretty ok with focusing mainly on 1st party release schedules while pumping up the 1st party quality. I have to imagine whoever takes over could shake things up and change the company's direction. Please just don't be the Zelda guy Aonuma. And don't be anyone from NOA, that would be an unprecedented disaster.