Well hell, in the Bard's time, men played the female roles. I think we passed sacrilegious by his definition a long time ago. So why stop now?
Anything than encourages interest in the works without making people suffer through R&J endlessly would be a great thing. A little added skin exposure to get guys interested couldn't be all bad.
You could do "Wet T-shirt Wednesday" performances for the guys, and "Tighter than tight Tights Thursday" for the women.
Just make sure not to include any of the shows featuring Falstaff. Fat guy in a little pair of tights is no one's idea of a good time.