Very frequently do I still wish something like that was possible, Of course you realize these are just childish fantasies and hopeless desire, but it's still there,
I saw a british movie (i think) called Virtual Sexuality where they had taken sex change to a whole new level and the leading actress stepped onto a machine designed her own male version of herself and stepped out as pure biological male, This movie still haunts me today.
I also often dream they would come up with a way to create functional male genitals with testosterone and semen producing testicals. Of course I know this wont happen in my life time. But the dream is still there.
I'm glad the technology atleast allows hormone replacement therapy, top and questionable bottom surgery for us FTM, there was a time this wasn't even possible.