no reason not to take the stall right up to the wing drop and show sensible recovery using rudder.
Now, on what engineering or certification basis do you make such a sweeping statement ? If you go beyond what the test program looked at you might just get a surprising ride for your trouble. Rudder is not the stall recovery device ...
For example do you mean only sufficient rudder to prevent further yaw towards the dropped wing?
Which generally reflects the flight test work.
Surely you are allowed to use the aircraft to the utility category limits once you've burned off sufficient fuel?
The utility category certification generally involves restricted weight and very restricted CG. You need to make sure that you meet both.