One of the more prominent very few people are aware of is how Bitcoin will have a hybrid Proof-of-Work and Proof-of-Stake system in the near future. This is a creative decision by the developers very few people had envisioned up until now, and it will effectively turn the entire Bitcoin ecosystem on its head.
People have to understand the Lightning Network uses a concept that requires money to be committed to a multisignature address. More money increases the number of transactions to be handled, which will generate new fees. This is a real proof-of-stake system, but it will be based on the Bitcoin network in a trustless manner, and guaranteed by Bitcoin’s proof-of-work.
The consensus algorithms of the future may benefit from proof-of-stake according to Antonopoulos, as this solution would allow for further scalability than the proof-of-work technology is capable of right now. This is just one of the many surprises Bitcoin users can expect in the coming years as creativity is being stimulated by the open source nature of this Bitcoin concept, and its open nature welcomes all kinds of different ideas