By value engineering I was referring to the materials. If they use the same glass that they did for phase 1 I'll certainly be more than satisfied.What makes you think that? They already have, depending on how you look at things ("changed the design").
It's unique because it will be so tall. If this was anything around 250 metres or under it would start to blend in with everything else that's being put up there. So it's not really offering anything startling or distinct from that perspective, IMO.
Here's the thing. To my understanding, Phase two was to have a curtain (?) wall similar to CIBC Square. Phase 3 was supposed to have a rooftop glass enclosed restaurant of sorts. Both of these are gone from the current plans...
I think you read too much into the old renders, if you look closely it doesn't appear like the glass is angled at where the diagrids meet except maybe at the crown. Aside from that they were quite different in that they weren't extruding outward like CIBC's does so I don't think that was an apt comparison. Personally I think diagrid lines are a bit overrated but I understand why people in Toronto want some kind sort of architectural flair since the city's architecture is generally so muted. What was gained however is a more slender profile(even before the height increase). In terms of height to width ratio is seems like it's approaching 432 Park territory, though obviously not quite there since 432 Park is 200 feet taller. And there is no indication that they won't be using curtain wall for the non-balcony sections which covers much more of the exterior in phases 2 and 3.