I am impressed with the sheer size of the museum and how it exhausted me before I could see it all. Maybe I didn't pace very well, but I certainly enjoyed it and would recommend it for everyone. I'm not a huge museum fan, but the Glenbow is definitely worth a visit every few years. I don't image all of the exhibits change, but I think they do a good job at bringing in cool, new stuff.
The only thing that was a pain was trying to use the secured hangers, as they didn't work well and we lost some coin. No big deal.