As good a response as can be expected, I suppose

WACA wants stiffer fines for pitch invasion

Try to get the legislation changed to allow a $10,000 fine to make sure louts can't simply pool together with their mates to beat the fine, admission of fault for the security breach, full (sounding at least) apologies to the Pakistani team and the player in question, and contrition.

If we can see the fines actually increase, an actual security review and that fool get pinned down with the assault charge and to see some time in the jail, I'd say it was a good step to making sure this never happens again.