I am wondering, will you change the "map edges"? In d2 everything was too straight. I think many zones would benefit from a more "natural" feel. Looking at the first act, just went you leave the base, I never liked just how everything was made of lines. It's like some god tried to make the world into geometrical shapes...
That's just me though, I think they did this for technical reasons. However (visually) the more fluid zones where better.
no, because that would require a visual artist to do in a reasonable amount of time. also, the time invested in that could be spent on something actually useful (there's already so many things to do).