pardon me if i disagree with ladouceur's conclusion here.
firstly, i'm in carl elefante's camp when he stated that "the most sustainable building is the one that is already built". in a city that is quite happily embarking on a climate initiatives that will cost us hundreds of millions of dollars in the near term, demolishing almost half a million square of enclosed space seems pretty counter because purpose-built is cheaper than transformation seems incredibly short-sighted and off-point.
secondly, i am amazed that even if you wanted to ignore the sustainability issue, how can you make the blanket statement that it would be less expensive to purpose build than transform without stating what the purpose is? there were viable plans to repurpose the coliseum for everything from large convention spaces to hotels to senior's residences even if you want to project the silly "it can't be used for sporting even purposes" even if those purposes cannot be met in rogers place.
thirdly, there are examples all over the world of repurposed arenas including maple leaf gardens in toronto and stadiums like bush stadium in indianapolis.
lastly, if we don't have the imagination today or can't envision or support a second arena the way vancouver does with their old coliseum (of which by the way ours was a virtual copy), we're talking about spending more than $35 million to create a vacant piece of land as we don't already have enough vacant pieces of land in edmonton including vast amounts surrounding this building! we could mothball the coliseum and spend more than half a million a year in maintenance for 70 years figuring out what to do it still and be further ahead. the city of edmonton can't control it's spending - and this is maybe one example of why that is - and will have to borrow this money. half a million a year is less than 1.5% of $35 million while borrowing costs are likely to be 3 or 4 times that.