https://medium.com/wanchain-foundation/the-importance-of-blockchain-interoperability-b6a0bbd06d11
The crosschain interoperability and the use of proxy tokens to represent a different type of token on the network does not seem like a new idea, Waves has been doing this for the last year already. Still it is good that more projects work towards this, in the end you want a more connected ecosystem for ease of use for everyone.
Waves been doing it for long but is really enough and better? It would be interesting who's network is gonna work better and has better acceptance in the mainstream. Many projects are also contending.