This is pretty interesting, for some odd reason I am kinda hoping for The Witcher 1 Remake in the style of TW3, that would be absolutely great, TW2 for PS4 would be great as well, and I bet we will be seeing The Witcher 3 GOTY Edition some time in 2016 or something.
But as far as the future of TW franchise is considered, I'm interested where they go next, if they choose Ciri, they'd probably strip her of all her powers that made her so overpowered, and she can make an interesting character and take on the world.
I hope they focus on giving us an established character to play with, a character with a strong voice, history, and a worth while story to tell.