This isn't a shopping centre, it's the latest of Bridge Studio's Sound Stages (Lake City):
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The footprints could be readily provided within City Centre and the additional clear height could be readily created by removing the existing intermediate/second floors as required. The requirement for sound isolation between studios would provide lots of "width" as/where needed for any structural cross-bracing to replace the removed floors.
Doing this in the heart of downtown would provide lots of support in terms of hotels and restaurants and other services and in turn would support those uses.
With direct LRT connections, it would be easy to collaborate with the U of A, MacEwan and NAIT and would be an interesting add-on/tie-in to artists performing at Rogers Place that might want to record while they're here.
It's also something that would fit in well with the both the city and the province's desires to diversify and to encourage expansion for the film, television, and sound recording sectors.