I think that from an AI Alignment perspective, giving AI so much control over its training seems to be very problematic. What we are mostly left with is to control the interface that AI has to physical reality i.e. sensors and actuators.
For now, it seems to me that AI is mostly affecting the virtual world. I think the moment when AI can competently and more directly influence physical reality would be a tipping point, because then it can cause a lot more changes to the world.
I would say that the ability to do continuous learning is required to adapt well to the complexity of physical reality. So a big improvement in continuous learning might be an important next goalpost to watch for.
I think editing should be possible. Not sure about deleting it entirely.