I'd start by firing anyone who decides that the most profitable business strategy would be to make every numbered entry in Final Fantasy it's own franchise, regardless of relevance or popularity.

I'd follow Iwata's example and have monthly news videos so fans would be able to keep up to date with all of Square Enix's new projects (this includes coverage of the other two parts of the ill-fated Fabula Novala Crystalis project)

I'd have the company remake sections from classic Square Enix games like Parasite Eve, Xenogears, Chrono Trigger, etc. so that the game design/atmosphere of those segments can be used in potential sequels (that way, a Parasite Eve sequel would be more like that than say, the 3rd Birthday).

If demand for the Final Fantasy VII remake is really as great as it seems, I'll hold a public Q&A to see what it is people like about the game, contrast all the conflicting views together, and then oversee the project to make sure that the game keeps its lighthearted tone, I wouldn't want the game to be as dull and angst-ridden as Advent Children or Dirge of Cerberus. (Or anything Square's released as of late, now that I think of it).
-Side note: The more I think about it, the less sense it seems to be to remake FFVII without making it too serious. At least, not with the visuals seen in the tech demo. Of course, One could always dial back the comic relief, but why would I want to do that? Some of the wackier moments of NPC dialogue in FFVII has actually made me laugh out loud. Could that even be replicated if the game looked like Advent Children?