Hmm, though am not the old fashioned enthusiast, however i have a great taste for coins with great project of which i have invested in a few as well, in my previous article about the future of cryptocurrencies i talked about what i see in the future and just as you said
"running properly and solve a real problem"
good project with quality purpose in solving real life problem will be a big factor in determining who stays in the future,however i think ETN is a great project and one which tends to serve the true purpose of the ideal satoshi nakamoto's concept of cryptocurrencies, by giving the power of money back to the people.
Though it may not excel as Ethereum or Iota or Bitcoin as they all work in their various ecosystem with Ethereum solely leading the technological aspects of blockchain...
However, Electroneum is currently doing well in the purpose of which it was created for and in its ecosystem. And amongst all the COINS which i hodl, i believe ETN will be a great boost in helping the poor masses attain wealth if invested on. click here for more details on the electroneum article>>