please criticize the superchain as hard as you can publicly under this post please

i hope to either dispel things or learn something new — opinions are my own

& don’t hold back

lore @optimism | ex: @coinbase | views are my own | what if it all worked out? 

The two biggest criticisms in my mind have been acknowledged 1) centralization risks due to OP’s reliance on sequencers and 2) challenges related to transaction finality and data submission. What’s the latest timeline estimate for Stage 1? Stage 2?