In fact, cryptocurrency shouldn't be there just for the sake of cryptocurrency. It should be a convenient tool to solve people's problems. A tangible solution. Most of the projects forget that their product will be used by average people, who seek and try to solve everyday problems, even if these are investment problems.

Crypto and blockchain in general atm look like a geek-oriented industry, try to describe what is bitcoin and how to send/receive it to your grandma. Most likely she'll call exorcists.

So, usability, simplicity, and mass adoption are key factors for crypto success.