AlphaGo was a combination of neural networks with a tree search algorithm. I think that very interesting things could be achieved, combining neural networks with basic knowledge representation systems -symbolic AI-. These techniques are highly discredited for under-delivering in the past. But I think that it is a good moment to revisit some of these past techniques, and combine them with the more recent techniques of neural networks. It could be an interesting base to attach neural networks. And then submerge the AI on a basic simulated world. Something like minecraft, perhaps, as Microsoft announced that is going to do. I think that giving the neural networks some basic structure to depend on, can help to achieve results more easily.
In any case, I hope that high profile AI events like AlphaGo victory continue happening, to help to further increase AI research.