Actually, with my background in IT, I think its NOT A LOT TO ASK FOR.
It's a disgrace they haven't improved the web over the past 5 years significantly, when they boasted to be the most "IT enabled" airline around. CX's online booking are a joke, compared to what's out there in the industry.
My guess is that airlines depend a lot on travel agents, especially in Asia: improving the web sites reduces TA business, and the balance seems hard to strike.