I understand that.
The SG14 requests we are discussing these days form a somehow coherent whole, which I hope to turn into a somewhat coherent set of papers (not a request for ponies, hopefully). It might take a couple of meetings for us to decide the extent of this set of papers.
The aforementioned inplace_function<T,Sz> would be part of that, as would be a number of non-allocating utilities since there seems to be needs we don't cover and that a significant subset of our users would benefit from. As mentioned previously, I think Jonathan's suggestion is a good idea regardless of other concerns, and that it will be pursued as such.
Thanks!