The Aluminum Falcon said:

The high trees actually might help. Something to alter it from being typical Earth generally is interesting. As Bingowings pointed out, the desert in ANH had two suns and more than one moon unlike Earth.

Thinking about it, I probably am very biased since I live about an hour away from some of the forests used in ROTJ... That's probably why they seem so un-exotic. :)

I've been to the so-called "Zauberwald" (magic forest) in the German Alps, and hell, that one looks 100 times more excotic than Endor :D

Go there after it rained, and you'll start believing in fairytales :D