Here is one more question:
Will there be an opportunity to buy your coins, while playing?(I mean if I've lost all money, and want to return to the game?)
This possibility is difficult to implement technically, during the game you will be able to take a loan and return it later
But you said, that only premium-acc holders can take a loan, what I got to do if I am simple player?
I think your way is not effective
You should effectively allocate your balance, and as in any investment should not put at stake all your money, then you will not have such a problem