More class please

Hi,
I have noticed that when we insert a picture, it puts the picture into a new class named bb-image. It is fine because it allows me to put margins so the text is not too close from the picture.

But an interesting feature would be to be able to have more bb-image class. Would be fine if bbcode can check if the picture will be floated left or right, and then create more bb-image class such as bb-image-left or bb-image-right. This way I could put different margins according to where the picture is. For example I don't care about the left margin if the image is left aligned.

Thanks