Stonefort is quite nice for farming though if your farming act 3 and only reason people aren't doing it is cause they run a route for xp and not for drops. Fields of misery isn't bad but yeah I give u it's not optimal and oasis isn't really bad either I farmed that zone aswell when I used to farm act 2.
Fields of misery sucks.
Oasis sucks. (Though oasis is a lot better now, esp if you get those random crypts - resplendant chests rock).
Stonewall (or whatever) sucks.
They put them in the non-traditional routes of efficient farming on purpose, I'm sure.