Unfortunately, exchanges like Coinbase still ironically help prevent more attacks when it comes to asset pricing (decentralized match making is ah... not that s

Unfortunately, exchanges like Coinbase still ironically help prevent more attacks when it comes to asset pricing (decentralized match making is ah... not that secure or sane.) Potentially you could build something like the equivalent of Transfer Wise but for placing orders on exchanges if you don't trust that a certain exchange as playing fair. The meta exchange would have accounts on all major exchanges with USD and BTC balances. When you place orders, it trades from its balance on other exchanges, maybe splitting them up between multiple sites. The exchange would then instantly credit your balance when orders were filled and track who owned what on its backend (which would only hold BTC and USD deposits -- no trading engine.) Could work really well if you kept wallets well stocked. Am half asleep here. Prob already done. I know there are programs for managing multiple user accounts. But anyone doing something like the above? Would sure be useful I imagine