[oftheMoon]

If I could be so bold to suggest, how many lanes at all four corners/directions at the intersection can be closed off to traffic and used to gain pedestrian space?

Offhand, I'd suggest the the right turn lane of Portage Ave E heading west that turns north onto Main as well as the right turn lane on Portage Ave just before Notre Dame.

Even if those lanes were removed today without pedestrians, how much of an effect would that have on traffic? I say very little.