-
The main thing is letting people have a fair race against their equals. Men being generally naturally stronger than women cos the testosterone means that good women cyclists can be stuck competing against men who aren't necessarily just slower but also sketchier in a race. Just ask any woman that's done a road crit when it's women's cat 2/3 on circuit at the same time as men's cat 4. People should be able to enter the race knowing they will have a fair competition that will come down to skill and training.
Yeah sorry that was more of an expansion of your comment rather than just a direct reply. Fully mixed fields has been floated before and has it's own challenges.