Bear perhaps, with such a device, those whose erotic proclivities are via excitation in certain areas might too frequently fly to the edge of buffet because it feels interesting ...
(Confession: This is me recycling an old joke about the attachments we assumed the ladies flying MiGs for the Soviet Air Force in the 80's had attached to their g-suits as add-ons to the leg bladders ... punch line being "and they always seem to come back from training sessions with an over G indication on the g-meter!" )
All kidding aside, a seat shaker might be something to explore as a feature for SW physical sensation in SS equipped aircraft. (Perhaps AB looked into it and the test pilots gave it a thumbs down?)
I recall a couple of decades ago some USAF flight simulators we visited as we worked to upgrade a Navy helicopter motion simulators. Some used seat vibration to induce the feeling of being in flight.
This is fairly old tech. Put another way, the tech is there, but as with most tech, the fine points of application is the real tricky part.