Originally Posted by Vass
The best returners would be on top. People who can return well will over-power even those who'll use exquisite touch on the serve, I think.
You don't need to be able to return serve, you need to spank half court balls. So Federer would become even more dominant, since he's untouchable in that department.
After thinking about it for a minute I realise how boring tennis would become: someone like Federer would almost always hit return winners. Even moderate players should be able to at least take the initiative with the return. Maybe Hewitt or Nadal would win some points on serve every now and then, but still I think we'd see a lot of tiebreaks (on pro level).