Good post. Look at it this way. You can have a very average arm and be in the line up every day in the outfield as long as you can adequately defend and mash. In fact you can have a below average arm. Heck even a poor arm. But if your a defensive liability because of poor reads , routes , glove , too slow, you could have a hose and never see the field out there.
Arm strength is the least important tool for an outfielder imo.