I love the lighting updates introduced by Beamdog for most areas of the game. However... A few particular items stand out to me as significantly worse after the water and lighting patch. The main victim that I have seen:
Under Berez on the map leading to the Abandoned Lab, there is a tiny crystal cave. More of a nook, really. It was one of my favorite little hideaway spots before the lighting update as it looked really cool. Now, however, I personally feel the lightning makes these crystals look very different. If you look at them in game they seem to be rounded and the lighting gives them a more plastic-laden look rather than sharp protruding crystals.
Before:
Now:
This is very nitpicky and naturally low priority, but I thought I'd point it out and a place that may be worth a glance. If there's any way changing the lighting could fix the crystals or new crystal models may be used, I think it would improve the atmosphere of the overall area.