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?
To be more stable and more popular cause nowadays most of people don't even know about this world and big movement which they had on market make them impossible to be introduced in stores.
For sellers, it doesn't matter how many people own bitcoins. If these people can give them the money, they'll never give it up. But are people ready to part with their bitcoins? The price of the transaction and the time of their confirmation also make such trading uncomfortable. But some products can now be easily bought and sold for bitcoins.