Any new experiment is good for all economy as it brings new models to 'experiment' and see how the markets fell ... also having any 'smart-contract' like will become able to duplicate this WBTC concept on any other chain having those ETH smart-contrasts processing capability's like ( EOS, NEO, NEM, ARK, ... HTML, WORBLY and so on and so on ... ) ... migrating tokens between chains would need all inter-chain trust so 'shEOS' project would create tokens in specif 'time interval' building an Big picture "Inter-Blockchain-Consensus" feeling?! a different trust applies for atomic swaps (but time related anyway=instant) that tokens/coins just jump/change owner wallets on the same side of one of the blockchains; and token holders and exchanges agreeing on all this timed consensus "risks" of double-spending in all the chains involved.