Changing Humanity's Past

"I wish that, until I wish otherwise, humanity took a different evolutionary path and that humans are descended from felines instead of apes. Humans would possess some physical traits from their feline heritage, including cat ears and tails. Also, the average bust size would increase to be DD cup breasts. Additionally, women's feet would be designed so that they have to wear high heels in order to walk comfortably, and heel height would play a major role in the female social hierarchy. In addition, giving birth to twins, rather than one baby, would be the norm. The children would be a girl and a boy and would be genetically identical except for their gender. Sexual intimacy between twins would be seen as perfectly normal and healthy and could continue even after marriage. Finally, females would go into a period of heat when they ovulate, though the odds of getting pregnant from any specific sexual encounter would not increase because the women are in heat."