I don't think the best of the celebs (maybe Jason, Chelsee, Harry?) are as good as the best in previous years, and noone really stands out, but I do think the overall standard is more representative of what you would see if you went to a weekly dance class. If anything they might be, on average, slightly better. But yes, it would be nice to have a Jill Halfpenny too.
I read these forums and am surprised at the targets contributors set for the celebs. A celeb might give a good performance in certain aspects, but because they haven't got everything right, they are often dismissed as rubbish or talentless (or "a duffer" to quote the forum title). It takes the average person quite some time to get all these aspects right, especially some of the presentational stuff such as arm movements, good topline etc. Building core strength, for those not used to displaying it, is not easily achieved in a short time. Nor is breaking old, bad habits. I know the celebs have an intensive training schedule, but that may not necessarily help, since it is easy to reach saturation point.
If the judges, in their comments, could focus on what the celebs need to develop, it would help. Also there is a content problem, in that there is now less focus on developiing the celebs, and more on the immediate need to produce a crowd pleasing (content-lite) dance, OK, you may have to do the latter for practical reasons, but if you are in it for the long haul, you have to have an eye on the former too.