The real answer is converting from any format to any other reliably. Text to speech, speech to text, music to video, image to 3D, piloting a drone by converting video feed to rotor speeds, literally any file conversion, like html to pdf, photoshop project to png, png to photoshop project,... turning Toy Story 1 into a series of Blender scenes with all textures, models, materials, lighting, camera movements matched to a tee, should solely be a matter of how long you let the model run. It should never run itself into a dead end. It should instantly know when it is making mistakes, with no human babysitting it.