What's needed to use programs like AlphaGo to enhance human enjoyment of Go (and other games like chess where i have more experience)? I'm more interested in this than in the "man vs. machine" narrative.

Ideally we could take AlphaGo and produce an algo that can smoothly vary its playing proficiency as a human opponent increases in skill. The problem I've seen in chess computers is that setting them to "amateur" results in 3-4 grandmaster-perfect moves followed by a colossal blunder to enable the human opponent to catch up.

Ideally you could use a computer opponent as an always-available, continuously adapting challenger to train hard against all the time.