I keep thinking of some post-release commentary one of the Type-Zero devs made (wish I could remember the specifics or link...) where he admit that the team didn't really start working on Type-Zero until two years after it was announced. I have a strong suspicion that FFXV is in a very similar situation, given that all we ever saw for years and years was just random pre-rendered trailers. And there is plenty of evidence that they had a skeleton team at best for a good portion of its development cycle while most people worked on other stuff (like XIII).
It's a really weird situation because most publishers would never announce a game under those circumstances. But I feel like the real problem was some marketing genius wanted to make a big deal out of the whole Fabula Nova Crystallis thing without first considering whether or not they had the team in place to actually make the games. Is that development hell or just marketing hell?
Maybe the latter.
I think it was a "good" marketing tactic to announce this big, new, amazing Fabula Nova Crystallis SERIES (13, Agito, and Versus), but perhaps along the way were budget issues, internal struggles, other projects, development hell, and so on that may have turned it into "bad marketing" in the end. At least, that's what I think. Who knows how they operate.
Meanwhile, I'm happy to say my gaming excitement really only starts to hit me about a week or so before a new release is out. Till then, it's a moderate "yay" (w/ no exclamation marks or caps) till it happens. So much has been delayed this year alone, and in the field of JRPGs one has to wait for a localization announcement on top of JP release.