You could create a token on WAVES/Ethereum, and create a main exchange platform for tether to be traded on. And then force orders for other cryptocurrency es at a locked price. No buy/sell orders. Other exchanges could have buy/sell, but your fixed prices would mean a really strong price lock.
Is that what Tether is doing?
tether is officially banking established communal fiat currencies in exchange for their token,
everyone smart that understands this business model knows they are scamming everyone, they were recently hacked and 30 million USD tether were stolen, do they have USD for this?
not likely but still people pay now already 1.05 for a USD tether, they benefit largely from their co ownersship of bittrex
i work also on such a project, i once came up with the idea of a tether clone so people can hedge their risk, the market has demand for this actually
you can be successful with a tether clone too, if you arent determined and finish your product you cant be successful you can pm me
you cant avoid the markets perception even if you all the time admit that the banked physical assets are the token owners property, they will still mistrust you, its their natural behavior
a huge problem you will likely face is the public listening since, it has become unfortunately like a corrupt sect, which abuses its power
regards