True, from my point of view, there is no alternative (or hype will end next year).

If Distributed Ledger Technology ever wants to live up to their expectations, then the DAG is the next candidate.
The BTC Mempool is chock full of stuck transactions, and Crypto Kitties makes Eth sweat.
Not a very convincing performance for a technology that wants to put the established Players to flight.
(Realistically, there is absolutely no chance to meet the future requirements in a timely manner and thus no chance for mass adoption.)
If the history of information technology teaches us something:
*you never have enough memory
*you never have enough computing power
*you can never have enough IP address range
Every forecast requirement has always been beaten by reality.

From my point of view, there will be five topics next year: scalability, scalability, scalability, (energy) efficiency, flexible usability.