I know there are some fans of this here so I thought I'd post that there is a rather large article on Dwarf Fortress over at Gamasutra.
This game shows very nicely how graphics, interface and ease of gameplay have absolutely nothing to do with how much fun a game is or is not.
Yes, in no way would a better interface increase how much fun you had...
What happens if I start a new game in the same world? Will the previous outpost somehow remain in the history ?
Or should I generate a new world?
IOW, a better UI would make DF a lot easier to learn and somewhat easier and faster to play, but more fun...? I don't think so either.
Perhaps I should've said a good interface makes a game less "not-fun". Then again, maybe it's just me - an easier/faster to play game directly translates into more fun for me.