Synchronized beach volleyball so they have 4 women on each side instead of just two. Losers make out with the winners.
I would like to see them add duathlon to go with triathlon but that's just me beng picky. They could also add squash to go with tennis, badminton and table tennis (don't know why they don't have it actually).
Also, why not have golf but make it more skill based like long drive, closest to the pin, etc. That would be something I would watch.
I would imagine "Olympics after dark" where they showed camera footage of all the athletes partying after their events are done would get huge ratings.