When Qantas first started operating 767s on domestic routes their pilots would "require" 16R when allocated 16L. It didn't take long before a stop was put to that presumably after some phone calls between ATC and QF. The argument over the SHEED approach is that it there is no valid reason for an approach to be designed in a way that requires high descent rates for it to place an aircraft in the correct position for a landing. ATC allocate it because they have to. Pilots accept it but there are better ways to process aircraft that don't require non-standard configurations and descent profiles.