Well, duz's remake has some nice layout changes. As far as looks go - I didn't like the original, and since the remake hasn't changed much - I don't like its visuals either. :S
I think that is mainly because of polygon colors. It's almost the same everywhere and there's not enough atmosphere in different parts of the map. There's no "grassy area" or "watery cave" - there's just some greenish polys and some bluish polys. Also, if you look at the shading - it looks like it's supposed to be a sunny day, but then the background looks like you're somewhere in a dark swampy forest.