web devs will get ahold of this and demand that they have the ability to change the size, the animations of appearance and disappearance, specify a sound that plays when the menu is opened or closed, etc. I'm saying that this, like all other web things, will be bastardized and mutilated until it is just as complex and unworkable as the existing solutions which this is intended to replace.
Less javascript the better, plus it allows to impute dynamic behavior from HTML tags, without parsing JS code