Oh, I think it was easily predictable. N&P is a perfectionist, I think the history of the game proves that he always tends to better quality, more details, more realism. The consequences are always the same, the story goes slower.Dividing into 3 was a nice idea but no one was going to predict that the dev would take the chance (again) to slow things up. There were 3 possible scenarios coming out of that decision.
1. Dev works the same rate: same story progression in a year but less waiting between updates.
2. Dev works faster: more story progression, less waiting between updates.
3. Dev works slower: less story progression, more waiting between updates.
Number 3 happened.
And, in my opinion, he needs to ask himself, if it's worth it and if there is an end to this research of perfection.