It has it pros and cons, I firmly believe that you need to set some guidlines as to what defined as "cheating". Eg. A player gets tagged on his knee seconds before he slides into his bunker, on the slide in he "gets rid" of the hit, now is that cheating?
A distinction needs to be made between accidental and purposeful, and I would suggest at least 2 members of a marshalling teams needs to have witnessed it for it to hold any power.............but I can see it having a positive effect on the game as those who have been named would seriously consider not doing it again.
Just my 2p worth