You should also be aware of the fact that 2019 is the year that is lined up with major eth network upgrades and improvements so as a proactive dev team eth developers must have this point in mind and im sure they will come up with a solution for dapps and to make transactions in dapps instant and cheaper.
This year, not only important updates for ethereum, but also scheduled important white paper events for a huge number of ico projects built on this platform. We can see something very interesting this year.