A big fat bullet instead of a comma wouldn't cost much space, but I don't think I've seen it used. People are perhaps scared of innovating when there are legal requirements that they haven't referred to recently, while they are fairly confident that what they've always done is compatible with the rules.

By the way, what is it with a large proportion of labels containing either an asterisk but no footnote, or a footnote but no asterisk in the text for it to refer to? I suppose it tells us something about the workflow they use for producing these labels.