I love the new plan.
While I was a big fan of the original three towers, it was more from the point of a "wow" factor. Places like Abu Dhabi and Shanghai have some serious wow factor stuff too, but I'm not sure how well it all ages or how good it feels at street level. To me, this looks much more like something we'd see built in Chicago or NYC - which I view as positive. Also, I think we'd be pretty damn thrilled if this was the first iteration that we'd ever seen.
And we keep the heritage buildings ( retaining a liveable-feeling streetscape trumps a giant art project imo )! The CN Tower is a great example of this. An amazing wonderful landmark - but a pile of shit to hang out at, at the base. The original iteration felt like a CN Tower to me. It would have been an amazing landmark, but lacking as far as being a place you'd want to hang out at near street level.
That all said, I'm just an average guy with no architectural or design background. But I'm pretty happy with how this all turned out =)