The fact that Hive gives that ownership vibes, with your identity intact, which means no one can take it from you, it is pretty cool.
On the Kyc subject, introducing it will be nice on Hive. It will help the blockchain grow as we would be able to know if this or that person are truly who they say they are.
If I were to introduce it, I'll include it in the registration form of opening an account. For those who have 2 or 3 accounts in the blockchain, they'll have to link them together.
I am sure there are some people really gaming the system. They'll have 2 accounts with different introductory post and use the same accounts to write in a community and earn from it.