Finally, in narrower terms, looking at the discussion by
@turini2 ; You have lots of complex issues with being more ambitious; budget is among them for everyone. Building over another asset adds costs to asset number one, whose paying? The lawyers need to sort out strata issues. (The TTC still owns the bus terminal, but would now share certain infrastructure in common with any building over the top........that does make for complications.
To be clear, I'm all in favour of more civic ambition, but it requires the budget, staff hired for ambition, and who are encouraged to be bold and excel, and it requires lead time, lots of it. It can and should be done.........but it often isn't.