I guess it would only be the decisions where either us or them are playing. Decisions between cally and aberdeen aren't going to change the top two in the table.
Not necessarily. Celtic could finish second with 80 points but have gained 20 points through referees and Dundee Utd could finish third with 62 points having lost 20 points through referees so you would have to cover all matches or else the outcome would be wrong.