"The Childress/Conklin incidents of previous years should be ignored as precedents for the embarrassments that they were. So I don't think these incidents have been decided too badly. Just make sure you are consistent with your decision making this year and going forward."
According to Boti Nagy's blog today, the tribunal process was set up at the start of 2015-16 season, essentially copying the AFL's process (match review committee reviews video, picks out reportable incidents, assesses using standard criteria, makes ambit decision, player/club can reduce penalty with early guilty plea or risk higher penalty if they go to tribunal hearing). He implies that the process has not changed for this season.
If that's right, Ferguson and Wesley have been treated quite differently than standards inferred from last year's decisions (Conklin, Jawai). So does anyone know if there's been any change to tribunal processes from last year?