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The main ideas why Royals should remain in history are:
- Lazy solution
- Don't contribute to the thematic experience
- Ruin the possibility of players to fully immerse into the storyline
- Slots without Royals are more 'graphically rich'
- It's better for providers to invest the time creating Royals into creating themed symbols
Well, I don't think these you have mentioned above were the reason why the Royal symbol on the slot games or in a card game has remained. Perhaps because gamblers already know how to identify or determine what card it is. If there is who want to change the symbol will perhaps become confused about what card it is. So the popularity of the cards should remain on this game and nothing will change. A slot without royal does not look like a slot game. If you are going to ask me, --yes, I like the royal symbol on the slots or cards. It is easy for you to identify the cards.