A few months ago I had a chat with over of the guys at essendon who worked on the aviation side of the airport operator. He told me how the new hotel being built near Matthews Ave is angled the way it is so as to minimise the time that the tower can't see an aircraft on final to tulla 34 - apparently it's down to 8 seconds for an a380.
The en tower needs to 'maintain' visual on the 34 approach path in order to release off 26 - ensuring that a coordinated 34 arrival is clear. The hotel was being built no matter what - so some risk assessment had been manufactured to cover the missing 8 seconds as being tolerable (or SFARP) against the risk of launching the F100 or a global into the path of a 380.