It's an interesting thought, possibly combining ShinraTech with FFXIV. But the entire game's framework would have to be converted over, which would likely mean rebuilding the game from scratch, which I am sure Yoshida doesn't want to have to do again.

Though this does bring about a lot of possibilities for future titles, provided the hardware is able to handle the kinds of traffic this could end up generating. And if the FFXIV servers on opening day are any indication, let's hope ShinraTech knows what it's doing.