The Canadian Museum of History has posted a nice interview with Douglas Cardinal, the architect who designed the museum building back in the eighties. Cardinal is also the lead architect for the new Canadian History Hall (opening in 2017), which provides a nice bit of continuity.
I'm going to miss the old Canada Hall, though. Here's a walkthrough that Andrew and I shot on 28 August 2014, just four days before it closed for good.
I hope that the new hall retains the immersive quality of the old one.