With the relative sucess of tether, almost every exchange are coming up with price linked crypto. There's even a so called decentralized bank called cryptobank that is issuing dollar, euro, yuan, ruble and others in crypto.
Yes but those exchange based so they're not worth anything. If the exchange goes down you are screwed (like the USD token on Circle/Poloniex). The cryptobank is interesting but again they have to be backing the dollar, euro etc with something otherwise it's not worth anything.
The KEY part of a stabelcoin is being able to REDEEM it into the underlying currency. If you can't do it, it's not worth anything and there's no way I am putting my cash/savings/investments into it