Instead of just listing random genres for elements, I think we should do something like what Higs has done, analyzing each element and then assigning it a genre based on its nature. For example, an easy one: Fire is fast, powerful, and dominating, so a fitting genre would be hard rock (energetic, fast, heavy). Of course we should go more in-depth then that example.
And also I would like to point out that we should choose 12 genres that people actually listen to in this forum. Some people have suggested stuff like jungle drums for life, but let's be honest, who would actually listen to that? Instead, genres like electronic or metal are much more popular in this forum, and therefore should be included.
More later, perhaps.