Actually becuase of the seed they are very had to control also in the case of santa you are not able to take advantage of the free reload unless you want to lose the speed. In addition the trail created makes you very easy to target and if you were to move backwards or stop you can not see very well at all. As someone who plays santa a lot and am probably one of the best users of that race I can say that the ability does not really change anything and you are actually just as well of not using it on most maps if not better off.