I have read your whole post OP, and I do agree that there are somethings that stock exchanges lack. Anyway, the feature I like most is the copy trading. It's like what e-toro is advertising where the program would connect to the exchange and copy a traders trade. I think that would be a useful feature with every trading program.
I hope margin trading would be included soon enough with your program, and I trade in Bitmex most of the time. I would probably check your GUI and features soon.
Both margin trading and Bitmex are a work in progress right now. We will update this topic as soon as these features are available on the platform. What would you look for in a trader to copy? We want to provide meaningful stats to help you pick the right trader.
We're also introducing quite a lot of changes to the UI right now to make UX more fluent and intuitive. So if you're going to check out FUMGO in a while, you'll probably find yourself in an updated UI.