A vast improvement over the official scheme, charlie.
Proves "amateurs" can be trusted to come up with environmentally better designs than the pros. That's because you start with the physical form you're looking for, while the "pros" start with the numbers (dollars, square feet, construction costs), with the currently-fashionable theories, with the inflexible rules, and with the expectations of the public and development agencies in all their shriveled glory.
Public, developers and planners alike expect not-too-tall, large-footprint buildings set in or around a too-large "open space." That's virtue to the BRA, to Vivian Li, to the developers and their banks. They can't even conceive of an alternative like yours long enough to test it out and run the figures on it. It's just not the way things are done. It doesn't match any of the professional theories in the current textbooks.
That's because the game is rigged to favor the current official method, but it could just as easily be rigged to favor your outcome. You'd have to rejigger zoning laws, educational methods, financiers' notions of cash flow, contractors' organizational structure and the public's lame-brained misconceptions. A tall order, but not impossible.
It's scandalous but true that you, charlie, can come up in an hour or less with a physical outcome that's clearly better than the product of the informed efforts of the pros and their man-years of "professional" labor. It's clear to many of us on this board because we're enthusiasts, not pros.
Maybe it's time to introduce a little enthusiasm to the pros. They could start by throwing their theories and methods and book-learning out the window. Then they could sit down for thirty minutes, like you, and come up with a better design.
Since I actually do this myself and get money for it, I can tell you the method works, it's the coming thing, and mostly what stands in its way is regulations, narrow thinking and old habits. It's hard (but not impossible) to get things built based on this kind of product-oriented method; practitioners like Leon Krier, Andres Duany and Quinlan Terry have to put enormous and totally unnecessary effort into wrestling down the regulations and peoples' mindsets --but often they actually get things built.
As the public's awareness of global warming and its relationship to built form grows more sophisticated, this will become easier. After the city council overturned existing zoning to approve a little fragment of urban fabric I'd cooked up outside the rules, the mayor pro-tem remarked: "We have to make it easier to get things like this built."
In a nutshell you start with the product you know is right, not with the numbers and the rules, which lead inevitably to what we on this board (and few others) know is city-planning perdition.