Custom BBCode Icon

Hi there, right now its possible to add Custom BBCodes, but I can't find a way to add an Icon to those Custom BBCodes. And it's something that is very needed. For example. I want to create a Soundcloud bbcode, or a Youtube bbcode, etc, and I want to have an icon, so each Custom BBCode will appear on a square with an icon. It will ocuppy less space and will become cleaner and more beautiful. Like the bold, italic, and all default options.

And it should be possible to order at least the custom bbcodes, from the bbcodes list.