Since you were planing to launch your platform by end of December according to some replies in previous pages, it means that you platform is almost ready, why not share some pictures of exchange on those article, also if you publish an article about Aggregation Feature with some details should be great, I would like to know if you had deal with exchanges or you'll just use some sort of ways on your own side to aggregate it.
Project or the automation of a developmental procedure do not depend on the replies but it is a flow of establishment to achieve a goal at a proper time through a proper channel accordingly project owners will have a negotiation with the exchanges also they will figure out choose the right exchanges which will benefit all of us.