Why are the marks of Japanese playing cards only "♠♦♣♥"?

During the Sengoku period, a karuta similar to the current playing cards was brought to Japan by Nanban ships (Tensho karuta). Gambling was banned in the Edo period, and it changed into present-day poetry cards and hanafuda cards, and the current playing cards that entered the Meiji period are widely used.

If it weren't for the inevitability of changing the form, wouldn't it be possible to incorporate culture and spirituality without changing the structure significantly?

With that in mind, I expressed it as "Japanese playing cards of the present age."