I actually liked the first icon even more than the second; its style perfectly matches the style of the developers' icons.
The first icon isn't mine; it's by A_De, and I don't think he's aware of the style of the 5th game.
But the main thing is that his version is exactly what a Djinn should look like, and in the original source, Iona is indeed a Djinn, so it all makes sense.