After playing Ghost, there are specific gameplay aspects that could have solved certain issues in the Witcher 3. The first thing that comes to mind, is the horse mechanics. In the Witcher, Roach was a pain in the ass. He would get stuck on obstacles and trees when riding or summoning him, and manually jumping wasn't responsive. In Ghost, the horse automatically avoids trees and automatically jumps over obstacles. And summoning is really fast, plus you can mount as you're running. The other system, is world navigation. In Ghost, the wind guides you. You don't have intrusive HUD you're constantly looking at to know where you're going, except it is a problem in the Witcher 3. A future Witcher game could use a system similar to the guiding wind.