RB, if you could provide stats showing the rate at which these outfielders are getting assists then we would be closer to a stat that would be benefitial. Honestly there is no way we are ever going to know the excact impact of Revere in RF because there is no way to know the intent of the runner. Would a different RF cause a runner to not attempt advancing on a given play? Well in that case that RF has no chance at an assist and in your argument this would essentially go against the RF.