riding time wouldn't stop the top man from stalling, but it would sure make someone work up from the bottom. wrestlers learn at a very young age that if you are ahead, take bottom, don't get turned, you win. with riding time that strategy is out the window. stalling on top and neutral is a little easier for refs to decide. if you back-up, fail to circle, or attempt a takedown, stalling. if you stay on the hips, for more than 5 secs, and don't work for a fall, stalling. from bottom you can make it look good.
i agree with sportsfan here, there are 4 styles in america, folkstyle, collegiate, freestyle, and greco. maybe we should push for 3... collegiate,freestyle, and greco. i think getting too close to fs/gr could be detrimental. i think collegiate style would certainly cover some of the action,and excitement aspect.