The extended delay makes sense, and I would argue that it should be even longer than 8 days. This is because 7 days are required to bridge the funds back to the mainnet, leaving only 1 day to communicate with the community about any potential changes they may not agree with, which could lead them to decide to exit the network. Anyway, I voted for the proposal, as it will give the Security Council members more time to double-check for any potential threats related to the approved proposal and exited for the Arbitrum network moving another Step to higher Security Stages of Rollups.