If you want to be a global casino, I suggest you to make English your main language because it's hard for non turkish customers to find a bar where they'll be able to change language.
Template is clone of one website which had ANN thread on bitcointalk's gambling section, I remember that website had English language and 100% similar template, don't know whether that's your or not.
Also set house edge 1%, that's standard in gambling cummunity.
Can you make clear how your losing bonuses work?
Our casino was change language lately
There is no problem about language. And house edge divided, now "%1".
Losing bonuses work every weekly
For example;
This week you lost 0.20 btc, and next week you'll refund 0.05 BTC with automatic system.
We wish best of luck