Will this be some kind of API type service to have access to many exchanges. If I am thinking right way you need to form some partnerships or some collaboration in order to have access to their trading platforms, no ? It is interesting concept for day traders to get access to better prices across the trading platforms.
I think will be great if we will see some test account. It is very unclear from technical side for me now.
Yes, now we make faster our back end, and make demo app.