This tweet highlights a key difference in philosophy between
@PhoenixTrade and
@FermiTrade . We absolutely think FCFS is the optimal market structure.
1. Validator revenue gained via reordering is a net social loss. Happy to see it reduce.
2. Not incompatible with MCP if you add a separate sequencing layer.
3. It is enforceable- we developed POSq protocol to do just that.
Who actually wants FCFS on Solana?
1. Validator revenue will decrease without reordering (unless they lie)
2. It's incompatible with MCP (unless you're okay with lying)
3. It's unenforceable because validators can just lie
"Validator's choice" is pro-validator, anti-user.