I especially like this for diving.
Every incident I have seen where a player was booked for diving this season, the player has gone to ground in a far too OTT manner, irrespective of whether it was, in fact, a dive. At the moment, players can dive flamboyantly, feel aggreived if it was actually a foul and they are booked, but no real consequence comes from this exaggeration. If the risk of making the most of a foul is potentially punishable with a ten minute breather, that would cut it down substantially because players would tend to only go down when they have genuinely been brought down.
It would also stop commentators saying that Snodders "should have gone down", as they did on three occasions that I can think of and I thought it was commendable, even though it might have won us a penalty. On which note, I think they should change the policy about if a defender fouls an attacker with their legs, but the other player doesn't go down it apparently is not a foul - it's contradictory to the pushing rule with 50/50 headers (which is equally random).