Both the StrategyArb.sol and StrategyOp.sol contracts have a setRouter function to potentially change swap routers if they turn out vulnerable/paused/not working correctly. StrategyMainnet.sol doesn't have such a function and it always relies on the Curve router working correctly.
Any potential issues with the Curve router will directly harm the operations of the protocol on mainnet and there won't be a way to set another DEX to swap.
Manual review
Consider adding a a setRouter function in StrategyMainnet to ensure that no outsiders issues will effect the contract.
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