I just had an idea due to the precarious financial situation with the current rail system.  Since they now know they can't afford to build it all the way to Ala Moana Center, why not take this opportunity to stop the current construction once it reaches the airport and extend it on the opposite end and make it go all the way to Ko'olina or maybe even Waianae if there's enough money.  Over 20 years ago, the powers that be declared that Kapolei was going to be Oahu's second city.  Why not make that a reality by having rail reach what's considered Downtown Kapolei and some of the resorts out there as well?  Now's the chance to make Kapolei a real second city instead of attempting to shove even more people into crowded Honolulu.  You could even do tax incentives to have businesses that exist in Honolulu move to Kapolei to spur vertical development instead of the horizontal bedroom community development that's being done right now.