We are consistently dispatched to an altitude we will not be able to make in 200s. The answer to this is simple...."We'd like to stop the climb at FLXXX." If you are in a 200, in the summer, and you are filed at 350 it probably aint gonna happen. grab a little more gas and stop the climb at 31. At what point did we stop being pilots? This is basic stuff. A FL280 restriction is a little extreme.
A 7/9 being restricted to 350 is downright asinine.