2019 will be crucial for many projects that started last year and this one including Dust. In some way, the future of crypto depends on 2019 to bring some results from all the projects that raised so much money in 2017, otherwise people will stop believing in blockchain.
I think every year has been crucial, 2019 is nothing special, new tech like Dusk will rise but no-one yet knows if the best one "wins" the race. But every new experiment adds to the variety while breaking old boundaries.
The real believing and adoption starts with simplicity. You can compare it to the start of the internet... Remember how difficult it was to get online back then? Crypto is there now.
Like for example Metamask is still too difficult for masses even while it's a step to right direction, it should hide most of the data.
Some sort of "dns" system could work for addresses as well. After all we are not normally typing ip addresses to the url field either.