Useless extra officials

[tonky62]

What the heck are the extra officials behind the net for?

They never give any decision even the most obvious {Skyrtle elbow}.

Get rid or use them to help the ref.

[CAMiller]

There was an incident in a game the other day where one helped the ref determine if a foul was in/out of the penalty area and the extra official got the call right. Not sure if they are there to be proactive (actually draw attention to incidents) or reactive (just assist when called upon).