I hate that rule. 

The perceived problem is that players agree to draws without competing. The effect will be to ban certain variations, without banning the draw. The Kosintseva sisters will still find ways to reach bloodless draws against each other, but they won't be able to play games such as the following:



For me, this is a perfectly legitimate game, even though it has occurred hundreds of times.

What happens as Black if White plays 7.c3?  The best move for Black is 7...Qd3. And then if White doesn't take the B, White will be at a disadvantage. 

This rule makes playing such an opening very problematic. Which player is at fault for playing the draw after move 7?