My favorite part is when the tower will hold a 'heavy' (everything from a 757 up to A380) to launch several RJ's, then finally launch the heavy...then when you talk to departure, they tell the heavy to slow to 280 (or less) in the climb, because you are following...all the RJ's the tower guy put in front of you!

Why can't ATL ATC just specify that ALL Departures MUST maintain 320 in the climb?

OR...put the slower ones at the back of the launch parade, instead of the front? Maybe with all these new SID's they will have more places to send the low and slow trafic.