It's a unique/rare design from that time period.
Remind me again what's historic about the 'shed' that looks like a shanty town?
In terms of the Bush shed's adaptability, it clearly is a failure: it is dank, dark, unpleasant and restricts passenger movement.
MetroMan said:If they were ok with demolishing part of the old shed, it can't be that valuable historically.
If all of our history isn't worth keeping then none of it is? I think most historic buildings are not in their original state so if your analysis was the basis of historic worth it could be used to rationalize the elimination of most historic buildings.