Chicago really doesn't need a presidential temple of worship masquerading as a presidential library, or a fancy downtown college basketball palace, or a Star Wars museum on the lakefront. And downtown doesn't need a big casino, either, not even a glitzy one with monstrous video billboards depicting the giant, pitiless eyes of the mayor staring down at those from the neighborhoods who dared to look up. Downtown has been getting quite a bit of attention, and though it might be nice to have all these things, (or not) — they aren't vital to the future of Chicago. But there is...