Who will give the sponsors the most bang for their buck is beyond me, but I think it will be driven by today's 'standards, whatever the heck they are. I agree, times change and with it, so does what interests society.
I do think that seeing more skin and less clothing is a plus. Maybe a Vanna replacement will no longer come waltzing out in a dress . . . maybe something skimpy like a bathing suit? Who knows.
One thing is for sure, IMO, it won't be a computer generated image. The real deal will be the biggest seller (even though the real deal just might turn out to be a silicone laden babe . . . or maybe even a steroid stud . . . or both!)
I remember the old car commercials - some gal in a dress with a slit up one leg would slink out and present the car with a flourish. We eventually moved to the family oriented look - Mom with kids, pets . . . and maybe even Dad.
The public is fickle.