I think the key point is that simsense isn't something you just tack onto a traditional movie. The best stuff is created specifically for use with simsense, and the whole arrangement, pacing, etc are all different. And the key skills for the performers is more about how they pick up on simsense and less about how they look from the outside (although performers will still, on the whole, be chosen from the beautiful people)
Also note that there is probably a lot of popular simsense that is not so much about plot or character as simply about experience. Riding a horse, cooking shows (or simply food appreciation shows), boxing matches, garden tours, concerts (as audience or as a performer), ballet dancing, sky-diving, and so on.