I'd think adding towers on top, and renovating the west side with more glass less bunker (similar to Manulife) would be great.
It does look a bit dated inside and giving it an internal refresh would help. I'm not really a fan of demolishing it outright. I'm a bit delusional and super optimistic but I think the mall can come back especially as we get more people back in the core, from office workers to residents and students. I mean we have some retailers opening stuff already and moving to larger spaces inside so it's not a complete lost cause.