To be honest I'm very impressed with the current developments in Metamask, because apart from the security features you mentioned, Metamask also has many new features such as swap and britge. I think in the near future there will be a lot of development by the metamask team.
This is indeed a good update and a big game changer, imagine being tagged as a scam wallet and freezes your crypto this can save a lot of users from falling into a fake wallet. What will happen though if your wallet being tagged as a scam? Are they going to release the crypto or seize it and airdrop it to the public?
I don't know about that problem. this is just my opinion, wallets marked as fraud will be frozen and no one can access the wallet and will be published as a fraud wallet so that no one will be scammed again. again this is just my opinion let's wait for more updates.