[quote]realistic traffic you say?
well, first of all, it's impossible for MS to have a photographer at every airport in the world (or at least every intl airport)! second, it would take too much time to add all the parking spaces and write all the realistic flightplans, if not, they'd added long time ago to the default sim. third, MS uses always airlines such as Landmark that doesn't exist in real life, simply because they don't get the rights from real airlines to use their logo and name. if they are going to use realistic AI, ProjectAI would be there for nothing.
also, writing flightplans and creating AI planes (like PAI does) are things we all can do, so why would MS spend time doing that? they'd better use the two years they have to create a new sim...not traffic!