R31GN I don't really see any problem with the CS. Though soul elementals come from various tribes and only consist of one element. I just need you to express which element that your character represents. I assume by the picture lighting, but it is honestly up to you.

Dark light love the character as well and just so you know as a decaying it is not a transformation, but rather what happens when you do not feed. Also you will need a soul drain ability to be able to feed and survive in that body. (can be used on animals, large plants and any humanoid) Also its up to you if you want to stumble upon later, but you are able to transfer bodies, but once done the previous body burns up in the transfer. 

I love both your ideas! ^_^ I can't wait for the lawful good to run into the chaotic neutral. lol