More and easier World Builder / mapping features
Simply put, WB tool should have a way to create various weather effects, such as different kinds of clouds, thunder, blizzard, rain etc etc.
C&C3 WB for example didn't have various macro or cloud textures by default, but now I have them once I downloaded some .tga files. Creating a blizzard or rain in Generals and ZH required a specific map.ini file.
See the media section for a picture I made (MS Paint editing ftw)
Easier mapping and more options for everyone
Work, work, work...
Cloud styles names are placeholders.