if Im on a roll and there are no barracades, obstacles or natural obstacles like a water pit or ladder I can tag 15 people or so within a minute, I guess if you greatly diminsh the fasts maneuverability (moving left to right, sidestrafling to move faster, not forward) it might make the odds even for the humans.

I just dont see limiting it to 3 making a difference in survivability, but that combined with the reduced mobility on popular escape maps may work.