The fields of DayZ are so dull and boring, Chernarus is a poor country with lots of agricultural villages but there's not a single crops field that I can see. It is absolutely boring and there should be more variety with the fields. Swamp areas would be so good to see, but I can't come up with a proper place to make a swamp at.
I really hate the huge fields between Vybor and Green mountain, it's plan dull, no trees, no forests, no crops, nothing. It's just boring. I do like the area between Novaya Petrovka and Grishno however again there's not so much variety. Also Stary-Novy-Altar areas are really dull. There should be more variety between these areas, Lopatino as well that came to my mind just now. Hopefully, we'll see changes when they add the new environment stuff.
Currently Chernarus is like a huge desert that has a few green trees here and there. The forests are just boring with repetitive pine trees, nothing in the scenery to say "wow" when you are travelling in the forests.