SGR seems like normal turnover (no retail strip stays at 100 per cent occupancy for long). The Barrington list doesn't seem bad at all--10 empty spaces over about 12 blocks, a big chunk of which are due to the Roy.
Trouble spot seems to be Granville and Barrington Place mall--like Someone123, I that has a lot to do with the how the north part of downtown has been negatively affected by bad infrastructure ( i.e., pedestrian access from only one side, due to the Cogswell, which swallows up the north access points in a hostile no-go zone).
People go to SGR to shop, and to the extent they wander north it's up Barrington. Granville is too far for the SGR crowd. There's nothing wrong with Granville itself--it's what surrounds it.
I wonder what would happen if it were de-pedestrian mall-ed. Such experiments have rarely seemed to work, and more effective might be the woonerf approach
. Cars are not banned, but they don't dominate the traffic; instead they're just one user among many. Also see: a naked street, like London's recently re-engineered Exhibition Road