We thought it was a good idea to have the Governor in Council. In fact, if new positions for officers of Parliament are created, it is essential to add them to the list as soon as possible. If the government recognizes that bilingualism is very important for the 10 positions listed, I don't see why a new officer of Parliament would not be added to the list right away.
So the reason why we decided to grant this power to the Governor in Council was simply to make the process of adding people to the list easier and faster.