If passed, users on Arbitrum Nova will likely see higher transaction fees, as the Arbitrum Foundation will no longer subsidize these costs, potentially making Nova less attractive for some users. The upgrade executor update improves the technical infrastructure for future protocol upgrades. Disabling the legacy USDT bridge will prevent users from accidentally using an outdated and potentially risky bridge, directing them to the new, safer option. The Arbitrum Foundation will save an unspecified amount by no longer subsidizing Nova costs.