I would think setting an alarm to swap prints would save far more money than wasting time and material to redo prints that break during the removal process.

That said, seeing one in action would be interesting.

Perhaps a device that swapped out build plates, in such a way that it remained somewhat calibrated, would allow for your idea, more than a mechanical boxing glove. Or even a build plate that would rapidly heat and then cool itself to break the material free without harming the build, then having an arm gently remove it. Of course this would require a build plate the could handle rapid heating and cooling.