Subway to the sea
I want it. The Orange Line is great, but what I really want is Antonio Villaraigosa's Subway to the Sea. Oh, and I also want the Sepulveda Pass monorail. This city needs a compelling reason not to drive on the 405. If I can get from Van Nuys to Santa Monica without a car or a 3-hour multiple-bus odyssey, we, as a community, will have arrived.
I've always thought a monorail along the 405 would be a great idea, with park-and-ride lots at each interchange, together with short-term car rental facilities.