"This is a untested beta version of the exchange - use it at your own risk." We all should be angry at ourselves, putting money in the hands of anonymous amateurs is not the best idea. The outcome was clear from the beginning, therefore we have to require all coin exchanges to provide us with the names and the background of all the people running them! Otherwise, sooner or later they all will end up like coinmarket!
You give your money to a total stranger, and just now you realize that it was a bad move!? - who needs to be blamed?
Your poor decisions brought you here, so suck it up and live with it!
I lost some coins too, so I fall in the same category
But we should learn from our mistakes and take some actions!
Let's take all of our coins from suspicious markets and make them follow a standard, where there is a better transparency to the users, like: who operates them, do they have the required background or prove with past experience that they are capable of running an exchange!
This will not only ensure you, but it will also bring more value to the coins being traded.