Yeah, we're looking at opening up some more testing stuff in the future, but a lot of times maps aren't worked on in a consistent manner. You'd expect everything to kind of get more detailed all across the map or whatever, but sometimes an artist will only focus on creating a castle keep or something and leave the rest of the map bare, or lighting won't be in, etc.
A big thing as well is that we use HLOD and baked lighting - essentially levels of detail and some other tech stuff that makes things look pretty, but run well. To get that working it needs to be 'cooked' so to speak, which can take 2-5 days per map. If an artist then moves a tree 1 cm, everything breaks and it needs to be rebuilt. Major pain in the ass, and it means that FPS would suffer or we'd have to rebuild every time.