Oh, duh, right here on Avsim... why didn't I think of that. Thanks.

Another thing you can do with AI smooth is change the seperation between AI aircraft on final. This can help when only one runway is getting the majority of landing AND departing traffic assigned to it. The FSX ATC won't clear an aircraft for position and hold until a landing aircraft has left the runway and acknowledged the handoff to ground, nor will it try to squeeze in a departure in front of an arrival once the arrival has recieved landing clearance (which is 6-8 NM out, about 90 seconds still). Combine this with the propensity of the AI aircraft to "taxi" to the next exit and spend up to 60-90 seconds to vacate the runway, departure lines can get very long and not move if there is a steady stream of arrivals.It takes some experimenting (and I'm still working on it), but spreading out the AI arrivals can open a window to get a departure in and move this line. I'm currently using 10 NM spacing (a bit more than realistic at a Class :( and now find that there is enough time between the just landed aircraft acknowledging the ground handoff and the ATC clearing the next aircraft to land for them to clear one departure for takeoff.It's not necessarily the most realistic and perfect workaround, but this is the default ATC we're working with. In the end, it gives you one departure for one arrival so you don't have to wait 40 minutes to make it to the runway.

Buy the F18 Superbug. Keep a couple of Sidewinders on at all times. Boom! Problem solved. (well not really because even though the F18 can shoot at and hit AI it won't remove them)