Here you should pay attention to roadmap of Eth and its main problems.
Having solved the issues of speed, safety and a number of smaller problems (some of which have already been solved to some extent at the moment) the project promises to develop its network and update the protocols. Considering that this is still the main top altcoin, even despite a turbulent stagnating market, the broadcast will still show its potential, so, it will show stability in the future.