What I am scared of, is the withdrawal part. Some API providers cheated their customers in past and I've got proofs, so is it possible that these keys (in any way) can steal our money?
I have an idea here. Why not create a platform like eToro social trading where everyone is allowed to copy and trade directly from the trader they follow? Not for free, you may charge for that too.
I believe you wont get any answers from the OP as he is not active anymore. It seems that he is not even care about what he promotes here, he just made a thread then gone for a while and he may come back with another new thread then he'll go again without giving any replies to the older thread.