I think the punishment is too harsh in Smith’s case. It seems he has made a bad mistake and let someone who is clearly a nasty sort, and too influential, steer him. As I mentioned in another thread, ball tampering isn’t considered a serious offence under the laws of cricket, and he should be punished according to the law he has broken. I think the laws need changing so that it is considered a more serious offence, but it is wrong to punish him as if it was more serious before changing them. It does look bad when you see tape being used, but it isn’t much different to using hair gel etc. which many players have used to change how the ball moves.
I think OG has it, in that he has been punished for embarrassing the country rather than for breaking the laws of cricket. Still harsh though; Atherton embarrassed England in the same manner, but wasn’t punished anything like as harshly.