Life is Strange is my GOTY.
Fallout 4 underwhelmed somewhat, that's not to suggest it's a poor game, but after 7 years of hype a cautious iteration on a familiar formula doesn't warrant GOTY (IMO).
The Phantom Pain is mechanically brilliant, but thematically fragmented and bereft of the soul and melodrama that initially raised the series to success.
I wouldn't begrudge the Witcher 3 being the consensus GOTY, as I've said before I don't think there's an RPG as well rounded and exemplary in everything it does.One might prefer other RPGs for specific features, but very few RPGs have been praised for just about every facet of the experience contained within them.