CDPR wants to take a break for now, and I'm fine with that. I do hope they choose to come back the world of the Witcher though, maybe set in an area where they'd have more creative freedom like Zerrikania, or Hakland.
They mention that plenty of work exists in Kovir multiple times, if your Geralt settled with Triss you have both of them there, if not you still have Triss there, contacts to a king - Just as Geralt had with Foltest - IF Ciri were to be the protagonist of another Witcher game, It could be that she moves up there to visit and get work there.
Alternatively you have the mysterious location of where Geralt and Yennefer settled down that Ciri could explore and find work.
Either way I'd be happy.
I'd like a little more Witchering and a little less end of the world situation if they start Ciri's solo saga.
~Or in a complete 180 you have the hundreds of years of Vesemir's life that they could explore.