Using US cities to build the perfect US city

How would you build the true ideal, the perfect American city? There is only one rule here: you are required to get all your "parts" from current US cities. EXAMPLE: Take San Francisco's setting, replace the downtown skyline with Chicago's with elements of Chicago's lakefront, as well, infuse it with San Diego's climate, give it Dallas's population (size....not Dallas's residents), introduce a city-wide rapid transit coverage as extensive as Manhattan's, place St. Louis's Gateway Arch on a waterfront setting in front of downtown, find select neighborhoods to house Boston's universities, use DC's Union Station for all interurban rail traffic>