My immediate reaction to the news that child benefit was to be cut for those on the higher tax rate is very positive. It does seem odd to be giving benefits to people who can't possibly need them in the same way as those on lower incomes. Universal benefits can just end up subsidising extra recreational activities for middle-class kids, which can't be priority in the present climate. As I understand it, however, there will simply be a cut-off, so that when you hit the higher tax rate, it stops.
Not being in a position to do the maths properly, I had wondered whether it would make more sense to make child benefit taxable, but I guess that may yet come!