Hope:
D. Blockchain - I'd say the blockchain is overhyped by the mainstream but severely underappreciated by Silicon Valley types. It works, it's fundamentally novel. Money is a big deal and this changes money as we know it. A huge challenge to governments and legal systems. It has this 90s Internet feel to it.
H. Detox - Having a safe world where you can trust people is a catalyst for all kinds of progress.
J. Dark data - It works and is underutilized.
Hype:
A. AI - It's great just don't see us hitting the Kurzweilian hypergrowth.
C. IOT - Mostly has to do with improving the legacy-world. Boring.
B. Microservices - whatever.