I think you are missing something. You can slow down by raising the nose but you can't stay on the glide slope while doing it. The controller typically wants best speed to the outer marker or beyond. Trying to slow down while flying the 3 degree descent without shock cooling the engine will be a good trick, especially if you can't use gear or flaps to do it. If you are VFR and not constrained to the glide slope, you can slow down by raising the nose. But if you are in visual conditions beyond the outer marker, there is probably not a traffic jam requiring best speed because everyone is making visual approaches. Am I missing something? DD
I agree with DanOlson.
After owning and flying a P-35 Bonanza, getting to a landing speed after a fast approach is very problematic, especially while trying to prevent shock cooling. Without the gear down, the Bonanza will be too hot and high. With the gear down, 140 knots would not be fast enough to satisfy the controllers best/fast approach speed. The nose up procedure is just about required to get a Bonanza to slow down unless the pilot can start slowing down 20 miles out. Same holds for many fast aircraft that do not have speed brakes.
Smart airport administrators with high approach speed needs for jets have added a second and/or shorter runway to accommodate the slower aircraft.