Too Long; Didn't Read
The launch of PoS is essential for the network to switch to PoS. PoW networks are protected by the cost of the work, and PoS networks protected by cost of work. PoS 2.0 is based on BFT and is widely adopted by projects like Tendermint, and Cosmos. Part of the reason is that the network is pushing decentralization and encourages more nodes to join the network. This requires a more complex protocol to support the P2P communication of thousands of nodes.