Chicago is famous for its skyscrapers. But a whole new generation of soaring edifaces is being proposed that would transform the skyline. “Every week, it seems, a rendering of a new tower is splashed across the front page or the business page in the hopes of generating positive “buzz” and attracting potential buyers and investors. Some of this may be pure hucksterism. Nothing like a sexy architect’s rendering to drum up a prospective tenant or two. Still, every proposal bears watching. It’s the ugly one we ignore that — surprise! — will get built.”