- More seamless connectivity between zones (aka no loading black screen)
- Fluid animations in cutscenes... and overall just fluid animations.
I never played 1.0 but watching some videos, I really like how smooth movement looked back then. I assume this had to be changed since combat is much more snappy and faster now, but there were small little details to the 1.0 animations, like your character swaying their hips as they're about to turn, or coming to a natural stop when they go from walking/running to standing.