Agree totally, Calgary needs to bring the college campus downtown. College kids wil hang out 24/7 in the core which will create ambiance and small business will come. These single people don't sleep, they are musician, bohemian, creative, artsy, young, they will add action and life to the Core.
I have lived in Montreal and have visited big, trendy cities in Canada and US, I noticed that Universities contribute lots to where they are located. McGill, UQAM, Concordia beside some vocational colleges have added tremendous life and business to Montreal downtown.
Let's take the best example and apply it to Calgary.