We at Quantum1Net believes what needed is higher amount of data transaction and speed, lower power consumption and stronger security.
https://github.com/quantum1net/DocumentsOther than that, what do you think?
Other than the aspects which are focusing on advancements of blockchain technologies, I do believe the awareness among common people like the advantages of decentralization and benefits of blockchain data management kind of improvements will definitely contribute to the future where more people will be adopting cryptocurrencies.