When you have a lot of styles and you add a new style, it goes waaaay down on the bottom in the Style Manager. That's rather impractical when going to the style manager (to delete or rename). Isn't it more logical and practical to place them on the top?
What about new additions on the top being the default sort order, plus an option to sort them alphabetically (much easier to find a previous added style).
[Edit: Some modifications to make it more clear]