Station Park | 18, 28, 36, 40, 50 fl | U/C

[GtwoK]

Seconded. It looks very nice, but it would be terrible to have that kind of wall (lack thereof) along King.

Is a wall of some sort not inevitable as part of the underpass, at least on the eastern half of the site?

Yes and no. If there was a spot where a retaining wall would be necessary, it would be on the eastern half, before Moore. But as the render seems to indicate, there's an access road there, so it's possible that not even that is necessary (though it would have to be included in the current construction, which is not likely). 

The grade is supposed to be at it's normal level again once it reaches about Moore, so the retaining wall from thereon is not necessary. That's my gripe.