I hate the other energy types.
As you are new to Dark Sun you would not be familiar with the battles that the revised boxed set of Dark Sun caused when it introduced these new energy types - shadow, gray, and cerulean. To my mind the new energy types completely undermined the idea of a preserver. These other new types are better than preserving. They don’t harm the environment at all, while with preserving there is always a toll on plant life, even if they don’t go as far as defilers. A lot of people were fine with it though, including most on athas.org.
For me, I just ignored shadow and gray, and reflavored cerulean as 3.5E warlocks that have a pact with Tithian.