I'd...uh...
Remake the entire SaGa series (including Romancing SaGa and the original SaGa 1-3) and localize them for the US for cripe's sake.
And yes... they need Sakaguchi back. Final Fantasy is not entirely right without him. If not that, drop Final Fantasy and start up a new franchise.
Hey, DOD3 is a great game. Let's keep up with stuff like that. Put Yoko Taro in control of the 'depressing arpg' division and see what kind of crazy ideas he might come up with.
More stuff like Bravely Default
Less stuff like Thief. *sigh*
I'm not a fan of Kingdom Hearts at all, but keep stuff like that up for the sake of good sales and keeping revenue flowing in.
...And then I'd kinda force the development of a game based off my webcomic, because I'm petty and self-serving like that. *smacks lips*