I've got an update on this one... Apparently SFGAm are planing on running both stand-up's at the same time. For at least the first year. But a snag that's come up is 6-flags has an agreement to invest x amount into SFKK each year. Removing Chang would count as a negative to that amount. How the negative amount is to be calculated is unsure. You can't assume the original cost would be the amount, but how do you calculate the present value of a coaster. It's not like they calculate depreciation for rides. So if true, the waterpark expansion rumored for SFKK in 2011 would have to be a costly one.