Been pondering on this one as well.
I've got a respectable rig that can actually run Witcher 2 in uber mode (though it does get a bit warm after a bit), and I'm traditionally a PC gamer. That said, I do have a PS4 and there are some games that I prefer to play on console. If I'm interested in a game on both PC and console, and the PC version does not get a major graphical boost, I tend to pick based on the interface. Shooters I almost always go with the PC's mouse and keyboard, while driving or sports games are better with the console's controller.
I enjoyed the first two Witcher's on PC, but the idea of kicking back in front of my TV (and surround system) on the couch to play W3 with the PS4 controller is appealing. I tried setting up a controller on my PC for Witcher 2 and it just didn't work quite right, despite the UI being somewhat geared to controllers already.
Any quasi-official word on what we can expect in terms of differences between console and PC versions?
In particular, I'm wondering about:
Timeliness of patches
DLC
Size of maps/frequency of loading screens
Areas/features missing from versions
Obviously, old save imports are not likely to be available on consoles, and I would expect the PC version to have the potential for higher graphical quality, but beyond that...