I get the impression that when writing the stories of the Witcher 3, they start with a short mission statement about what themes they want to hit.
The Main Quest - To relentlessly pursue. Both being the pursued, and being the pursuer.
HoS - How one should live every day like it's their last.
Now, for Blood and Wine, and I fully imagine it'll change my opinion on this, but at the moment - it feels far gentler than the previous, darker tales.
If I had to say right now, it's about friendship. Tinged with a bit of sadness, as certainly one party knows that the other won't be around for long, relatively speaking. But also perhaps both knowing that their glory days are behind them.
Again, one of the things this has nailed is giving a genuine sense of affection between Geralt and his buddy. The voice actor who plays Regis is spot on in carrying this.
I've heard it mentioned before this story is the perfect goodbye - so could see why they would pick that theme.
(It'll be interesting to see if, and how, my view evolves).
I think this game, and it's DLC has some of the best story telling I've seen. It covers deeply personal as well as wide sweeping, world shattering events with equal skill and urgency.And how they managed to keep that urgency going is rediculous! I think I must have put at least 100 hours into this game. And not a minute of it has been dead story time or grinding! It just keeps going!!! (or at least, what is grinding is so well hidden behind the Witcher Contracts it doesn't feel like it)
Sorry, I keep forgetting how to do spoiler tags. But yeah,
@Bugg that's the guy. And one of the reasons why I struggled, initially to see how they could scale it up when it's implied who (what), the antagonist of HoS actually is.
I'm really glad that, rather than going for the Starwars model of just scaling up (making a bigger Death Star - or in this case, a more powerful monster... which they can't), they've switched up B&W to make it not about a bigger or nastier enemy.