I can clearly see that there are other cryptocurrencies that are beginning to dethrone bitcoin, showing off there quick and secured transactions, though bitcoin continues to be the king. What does bitcoin need to improve state your opinions.
Bitcoin needs to improve its smart contract flexibility, scalability and privacy. And this could be done bythe promising innovation enabled by SegWit called MAST, which stands for Merkelized Abstract Syntax Trees.
MAST extends smart contract flexibility because it has no limit.
MAST improves scalability. It reduces the amount of data that must be transmitted, validated and stored by all nodes on the network.
MAST improves privacy, again by the virtue of keeping unused scripts hidden forever.
https://bitcoinmagazine.com/articles/the-next-step-to-improve-bitcoin-s-flexibility-scalability-and-privacy-is-called-mast-1476388597/