Pretty much everything I do in Unity, I compare to what I could do in Warcraft III. One of the most surprising (to me at least) omissions was the ability to make custom materials. That is, being able to layer, blend and animate textures to create a final look for your characters.
In this strange modern worlds, such things require one to make shaders. That means a whole heap of extra programming work, and some pretty esoteric programming at that.
Then they invented lovely graph-based shader builders.