Sorry for not replying to this sooner
@Mintyref
The range is there for use but in truth in most games, there will be no opportunity for the referee to demonstrate that they can deliver against the relevant competency. For example under Application of Law, 2 of the criteria linked directly to the issue of yellow cards and 1 directly to a red card. So if you don't show either card, you and if you don't demonstrate 4 of the remaining 7 AND don't make a mistake , then the most you are likely to get is a 7.5. Similarly in the other 2 heavily weighted competency areas of Decision Making and Match Control.
To get a really high mark, you need a high tempo game, where you get the right viewing angle to see the offence and then make the big decision, issuing the right colour of card and dealing with the aftermath effectively OVER and OVER again. this gives the game it's challenging feel and helps you clock up marks.
If it's a quiet game, it takes a skilful observer to note the usual little humdrum things that help keep a game under control, such as the quiet word while waiting for a goal kick, tipping the wink to a captain that his number 6 has no more chances or playing a bloody good advantage that results in a goal and then coming back to caution the offender.