I have noticed that the most called penalty is holding.  Holding is a ten yard penalty and usually a drive killer.  If you watch punt or kick returns you will see atleast one penalty for holding.  Since holding can be "called" every play why not reduce the penalty.  Sure holding is cheating but ten yards.  Why not five yards, an inadvertant face mask is five yards.  Offsides is five yards.  I hate to see decent kick returns ruined by a ten yard holding call.  Or the ref flagging a guy for holding and the offense looking at 2 and 20.  Any other ideas for changing penalties?