It's going to be fascinating to see how other developers create and market their titles since Witcher 3 landed.
I remember when the shift to "open world" was announced and the lip service given to Skyrim and Bethesda at large. I couldn't help but cringe and be concerned for the viability of the choice. What makes it so interesting playing the released version of Witcher 3 is that it seems to take far more inspiration from Red Dead Redemption than Skyrim and be all the stronger for it.
How are Pete Hines or Todd Howard now supposed to say with a straight face "See that mountain, you can go there!"? Projekt Red has done something truly special with the attention to detail in the writing of the side and main tasks. It'll be jarring to go back to the "fetch ten of these" and largely hollow things that are asked of us as players now.
The approach to mini-dlc's rapid patching and player feedback engagement has set a standard. The aforementioned writing has raised the bar. I'm wondering just how many other developers are going to try and rise to it.
I've been cycling what I play so that I don't burn out on Witcher 3. That and I'm waiting on an alternate appearance pack for Triss

Going back to titles like Stalker or Valkyria Chronicles has kept things fresh. Those two titles I mention in particular. Stalker's feel and unrelenting atmosphere and Valkyria Chronicle's desire to have you connect with your squad and grow with them. They both do something special in the same way that Witcher 3 has done some very special things. They look to connect with the player, deeply engage you and once they've drawn you into their world to not let go. There is a consistency no matter how puzzling their presentation might be whether it is Hans in Valkyria Chronicles, Stalker's bizarre assortment of anomalies or Witcher 3's vast array of monsters. They are all presented and connected to the player and their experience in such a way that suspension of disbelief isn't a challenge.
It's going to be fascinating to see what Projekt Red do next, how they approach it and what their ambitions are. I can only hope that other developers follow that example and push the envelope also.