Decentralized and Shared Sequencer Architecture
summary
Argues for a staking-based leader election to run multiple sequencer proposers, with sequencers limited to batching, ordering and making data available while rollup nodes do lazy execution so shared sequencers stay fast and permissionless; claims decentralization reduces censorship and MEV concentration and sharing enables cross-rollup bundles but only guarantees atomic inclusion at sequencer level, not atomic execution unless a bundle sits at the block top or special builders simulate and enforce it; describes bridging via state-root posting plus optimistic or ZK proofs and targets sub-L1 block latency.
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