^ Jebus that's hot... nice find!
I'm saying BC Place sized stadium because we shouldn't just build this for Calgary now, this still needs to work in a Calgary of 2-3 million.
BC place was built at a time when GVA population was similar to where Calgary is at now.
Retractable roof? Sure, that works for me too.
I'm not hard set on a permanently covered roof, but let's be fair, winters are long and crappy, and a cover-able stadium could see much more use throughout the year than a purely open air one.