Also:
* Graphics updates with shaders for improved water and fog (which you can combine with much higher view distance), godrays, HDR, etc, improved meshes, improved grass, high resolution textures with normal maps and PBR.
* Modernized UIs
* Multi-mark (extra marks as you level mysticism)
* Turn the books into audiobooks and add full voice acting if you're a mild heathen.
* Combat and leveling system overhauls if you're a full heathen.
https://youtube.com/watch?v=iFZm4VZnHy0