Nice post with a great overview about what exactly will happen.
I seem to me though, that the new currency doesn't really serve Amy purpose but making the creators money. The platform would work perfectly without it and could easily use fiat money, just like WeChat does. If anyone has an other opinion, I would really like to be corrected.
It is based on WeChats system as Tencent invested also in this. They want to expand the use of Kin also on other services. As Kin will be capped it will grow in value with the adoption of the users, like BTC. Fiat money cna be printed indefinitely by the goverment.