The Amazon is so close to the Equator that the seasons don't really affect the temperature that much. The main difference is that southern hemisphere winter is the dry season, hence the drought issues right now.
Not to downplay the role of climate change and deforestation, of course.
The one the Gnome team is working on right now, as described here.
The basic premise of rearranging windows at an optimal size, without stretching them out to fill fractions of the screen, seems like the perfect medium between floating and tiling.