Great, so lets ditch the drug testing and start the afl wide investigation. Multiple clubs found with suspect programs = multiple clubs investigated. If multiple clubs were investigated and put through the ringer like EFC have been it would be the end of AFL. Ping one club, make and example, appear to 'make a stand' against drugs in sport, job done AFL/ASADA.
"Biologically advanced tissues"...that's the belief that got Hird into trouble in the first place.
I suspect the AFL had knowledge that something untoward had taken place at Essendon long before it became public. If there's an investigation to be had, direct it there.