2/6's Justice Perren appears to have taken this idea to heart, and then some, in this decision:
http://www.courts.ca.gov/opinions/nonpub/B237041.PDF
As you'll see, the footnote numbers are not only bolded, but also appear to be in the same font size as the text. You can't miss them!
We'll have to keep an eye on this practice and see if it takes hold, or is merely an anomaly...