On the subject of mixed:
I would agree that mixed 8.0 should be 4.0 players only (and 3.5s playing up with 4.0s). 7.0 should be 3.5 players only. And so on. I mean, rec tennis is supposed to be fun. How is it fun for anyone to have some 4.5 guy fire twist serves at me for me to whiff them? With a 4.0 guy, I have a decent shot at the serve.
Interesting idea about the woman receiving on the ad side. I used to receive on the ad side, but I have switched. I found it was important to have the guy's FH overhead in the middle as much as possible.
-- Random Error Generator, Version 4.0
-- Master Moonballer