I think this is a good idea and it is about time. In Canada we get a lot of pilots and controllers speaking french and it can lead to problems.
Definitely an increase in air safety!
Please tell me to what problems this can lead or how safety is compromised in a dual language ATC airspace. We already had this discussion on the hamster wheel-like "
French ATC" thread. The safety argument of monoglots upon investigating had very little basis and it turned very ugly on both sides with the usual below the belt and nationalistic arguments.
Thanks mods, for deleting my previous post.