On an "equality" standpoint, I most definitely agree with the idea.

However, I doubt that at this point in the development time it is doable.
I think the whole voice acting/cast is done.

Adding female models calls for rather massive changes.

From changes in the campaign scripts to, well the whole voice cast business.
Not to mention that the game doesn't take into account height and body morphology.
Every single NPCs have the same "bone structure" and animations.

Issue is still not solved. I can confirm that wherever the player is underwater while the weather conditions are as shown in the 3rd screenshot, the lighting will be one that represents a clear weather.

http://i1356.photobucket.com/albums/q731/Chabsius/2013-05-05_00004_zps8a411056.jpg
http://i1356.photobucket.com/albums/q731/Chabsius/2013-05-05_00005_zps370c3c49.jpg

Weather settings used:
http://i1356.photobucket.com/albums/q731/Chabsius/2013-05-05_00006_zps8c60c87a.jpg~original