What we need right now is a killer dApp
I use Netflix every day and Amazon almost every day (as do many millions of others). Look at what's happened to their stocks this year (and for the past several years).
For ETH and ERC-20 tokens to see that kind of sustained growth, we need a killer dApp, one that many millions of people will use daily. This more than anything would signal the cryptocurrency space has come into its own.
What dApps do you actually use, or think you might use when deployed?