Yeah, I agree and it also needs to be a little lower on the dock as well. It seems to center the icons vs aligning on the bottom. My only other suggestion would be the ability to re arrange the icons after they are added.
I only had it installed for a few minutes to play around with it. Has anyone gotten it to work with the 5 icon dock? Seems like I always have an app on the dock behind the stack.
Edit: Just looked at some pics in another thread and it seems to look great if your using standard square type icons, but if your using icons that have different shapes, it doesn't look good in a collapsed stack.