From my point of view, playing cards with pictures of kings and queens have their own history that must be remembered until now, I have read history about the origin of the royal symbol.

The initial symbol is not the kingdom/queen, for example the origin card.



And change to a symbol like this.



As times change, there are probably hundreds of symbols and numbers in playing cards today, one of which is the royal symbol.
In my opinion, the symbols of the kingdom or the king and queen are representatives of the ruling figures in 970 BC, representing the kingdom of the Roman Empire or better known as the Macedonian Empire, the conquerors also involve figures in the Hebrew Bible, is a good symbol and needs to be remembered in gambling until now.

But for the symbol itself the kingdom that is in the Bitcoin slot, I don't think it becomes an obstacle or problem, actually I think it's better, combining the history of royalty, gambling and Bitcoin, this is where every gambling addict prefers to play with Bitcoin in slots or casinos, without having to forget the origin of the existing royal symbols.