In the safety of altitude, there is no need for rapid transitions except to miss other aircraft or a tethered balloon on the border. Because of more weather up there and more traffic, the safest way to fly (outside of thunderstorms and icing) is IFR. The procedural track is smooth and requires only standard or half standard rate turns. An instrument orientation using slow transitions and ATC works well here.
The greatest killers in aviation are inadvertent IMC and maneuvering flight. In response to these great killers, a partial (basic instrument only) instrument orientation has not worked well. Teaching only avoidance of maneuvering flight has not worked well. We neither train Private pilots for full instrument operations or safe maneuvering flight. We are either too high, relying on basic instruments, to see well, or we are too low without low altitude training. Many airports on the sectional are laid out well for an instrument orientated pilot flying contact, but many are not. In mountainous and irregular terrain, maneuvering flight is inevitable. Spray and patrol work, legally done with a Commercial, requires maneuvering flight skills.
In changing our orientation to the low altitude, contact flying world, realistic training is necessary to make rapid transitions. These rapid transitions are necessary to miss the many obstacles down there, to make all turns to target using all energy available, and to consider and be able to use all natural energy. Also, orientation change is not easy. When indoctrinated into one orientation or belief system over considerable time and iterations, change is psychologically traumatic.
In my opinion our basic instrument orientation in primary student training is shortsighted not just in that zero maneuvering flight training is provided but also in that just enough instrument training is provided to get many into trouble.