If I had significant wealth, one of the things I'd do would be to try and commission Miyazaki to make another film in the same veins as Nausicaa of the Valley of the Wind or Princess Mononoke. Maybe adapting his earlier Shuna no Tabi manga, which was also great. I'd even settle for something more kid-friendly like Castle in the Sky or Spirited Away.
I know money probably wouldn't sway him, but a donation to something he cared about... maybe. It's just an unrealistic hope, anyway.
I can't stand that there's nothing else like Princess Mononoke or Nausicaa. The world needs more Miyazaki, and especially his adult-themed sci-fi and fantasy.
Miyazaki is a treasure. I'm going to miss having him.