Block Accounts

When you create block accounts please use the single order system instead of separating the orders before they reach the exchange.  My understanding is that when the single order is sent from clearing to exchange, then the accounts broken up as designated, and filled, will give a better fill.  ( As opposed to breaking up order when sent from platform)  Also, I hope you would not charge extra for having a block account as many others do.  I'm looking forward to this feature and hope that you choose the method that would create the best fill for the client so as to keep in step with your mind-set of always using the latest innovations.