Since you're 80% through the development process you might just wanna go ahead and launch it to try how practically it works out.You could have asked the same question before implementing initial ideas.

-Such games already exist,have you heard about that game where we tame pigs and shit ,I kinda forgot the name.

-Similar games like scratchcard or Android Satoshi box games are in the market which aren't doing as good.

-How would you ensure provably fair in your gambling gaming platform ?

-Does the games have potential to attract gamblers from dice playing crowd.

-Not the least,check out the website in my signature,they have amazing graphical games which are mobile compatible.