Sv2 is a massive upgrade that miners should have rolled out a long time ago.

Biggest benefits:

- security: it prevents trivial hashrate hijacking by moving from a plaintext messaging protocol to an encrypted one

- efficiency: network messages are compressed, this should reduce the rate of empty blocks

- decentralization: miners can mine their own block templates, this doesn't solve censorship per se but it distributes the ability to censor transactions among miners, network participants who are incentivized to mine the most profitable txs