To me the blockchain technology has enough of what we already need and already you have mentioned most of the importance technology in the blockchain, although I don't have some of the operating techniques and the blockchain and I'm yet to study how the blockchain works but one thing people really want concerning bitcoin transaction is its security protecting you from someone else knowing about your transaction, and nobody controls it for you unless you have an issue then you can technically write to the blockchain support but your transaction is more monitored by anyone that is not activities much going on like the normal centralized wallet I really do prefer keeping money in blockchain or trust wallet than any others.