Anyone complaining about the Valley map DLC should consider making a map of their own. Or do what I did and watch some YouTube tutorials on how this is done. Then go back and run through the map again. Just because you can drive across it in five minutes doesn't mean it took five minutes to design, create, test, tweak, retest, run for playability, fix areas that break the play, retest, have more coffee, call the wife and tell her you won't be coming home tonight, retest, realise you forgot to add log litter, get upset, add waaaaaaaaay too much log litter, realise you still have nine more trucks to test the map with, drink more coffee, read forum posts, have a little cry, add more log litter to get back at forum posters, eat that last slice of cold pizza, wonder why you didn't take that DBA job, retest, etc...
Just because you can walk past a painting with a glance up and down, doesn't mean it didn't take months to paint. Maybe you didn't appreciate it. Appreciate the months of effort that it took to create what you finished in a weekend. The customer rarely works as hard as the developer.
Alternatively stfu and try doing better yourself. Seriously. The tools are there for you to try. Maybe then you'll appreciate how long it takes. If you can, feel free to share with the community. It might be the next DLC and the dev can finally have a weekend at home with the wife.