This airport is massive (you can see it when flying into PEK sometimes from the south). I wouldn't be interested in taking a flight to or from there until they open up the rail link to the city. I remember in the early days of the new Shenzhen terminal there was some sort of shuttle bus to the subway which took 15 minutes and for which they had the nerve to charge 2 RMB to ride. It was a real pain then, but as with most big infrastructure projects in China they ironed it out quick with the express subway line opening a half year later. I'll wait for them to iron it out, despite being a Skyteam fan.