Not to complex to develop, too complex to develop without sinking far more money into the game than it will ultimately make back. As long as AAA game development remains a very high risk investment, publishers are going to rush games and cut corners to avoid going massively overbudget. How can we insist on a premium product no matter how long that takes when we aren't willing to pay a premium price for that? There is no price differentiation based on quality in the current AAA market which is a huge problem if you want great games.
We need to let the $60 price point go. Bringing the price of top tier AAA games to $100 wouldn't just be a tremendous boon to the AAA industry, it would allow for mid-tier development to thrive at the $60 and $80 price points. We'd see more games like Nier Automata and Dark Souls. If we want better games, we need to be willing to pay more for games. There is no way around this.
And no, the success of The Witcher 3 does not make anything that I just said less true. Get your head out of your bottom if you seriously think like that.