For what it is worth I have exactly the same feelings about this as h5djr, can't see the point of changing to non-standard plates and if you choose to do it then just accept that some traffic officers or cameras will pick you out.
I do also agree that it is a bit of a pointless law, but it is not helped by having too many people who can physically make plates up in the first place, so enforcing it is too difficult. If only the DVLA could make the plates, then the issue would go away.
Finally, the biggest issue (and I am sure most people would agree with this) is people who try to make the plate look like something else, either by moving letters closer together (e.g. 1&3 to make a B) or by using imaginary screw covers for dots. I have actually reported these to the fuzz before, because they were so bad that it was clear that no camera would ever be able to recognise them, and there has to be a reason why someone would go to such lengths to remain undetectable.
As has been said earlier, the real issue is that if you are willing to do something that is classified as illegal, whether you agree with the law or not, then you have to accept there is a risk of punishment. I would much rather people were given a warning first, but the poice are not obliged to do this.