I'm more excited about what I can't see than what I can! But one thing that I've been thinking about lately is how Machine Learning can be applied to TypeScript, both in terms of using ML to gather information and inform TypeScript's design, and perhaps TypeScript itself using ML to infer complex things about your programs or carry out complex context-dependent tasks like refactorings or what-have-you. I feel like agent-assisted programming is going to be a thing in the future.