Even if it could be made to work Dolly-style, you would still be producing huge numbers of miscarriages, early deaths, and damaged offspring for each success.

Yes, this is what I was alluding to: of the 2 obvious routes to reproducing von Neumann levels of intelligence by playing god with genetics, the first one, the one OP seems to be suggesting, is abhorrent and troublesome. The second one seems straightforward and supported by the current state of understanding - but doesn't require the lobbying etc. (as OP proposed) as it's effectively already being done.