The haze would be good if it dissipated at a certain altitude. Even the summer haze and smog disappears when you reach FL15 to 20. Usually, there's quite an obvious transition altitude where you can see where the haze stops. At FL40 you are over just about everything except ice cirrus. But, at 30,000 feet you can usually see clear to the horizon or about 100-150 miles. So, our 15 to 20k mountains should pop through the haze like islands. Aircraft that are 10 miles away look like they're just a few feet away, it's so clear up there.
Offline, I took a 163 almost ballistic to 45,000 feet. The haze never seems to go away. It really takes away a lot of the beauty of the scenery that the map makers painstakingly put together. What good is it to have beautifully rendered mountainous terrain, that you can't see.
I'd say, take out the haze until you get it right.