I think Gebilin has utility for historians of Tarot the game--he may have been the first to explicitly put into expression their connection with Hebrew.
As a means of "numbering" the cards, that is, making clear their order.
If Filipas is correct and the images on the Trumps became standardized as a Hebrew alphabet book, then to readers of Hebrew who could read the code the Trumps have been numbered. As cardmakers were often Jewish, and, during periods when Christians were forbidden to play cards Jews still could, it's quite possible that there was a period when Tarot was a primarily Jewish pastime playing with a culturally Jewish deck that has no Cabalistic significance whatsoever.
(In fact, considering the prohibition to the observant against representing the human form, I don't see how the Trumps could have been considered anything less than secular, profane, and rather shady...)
This could also have given Jewish card sharps an advantage in the taverns in playing for money, as numbered Trumps make it easier to treach the game, play the game, and for the skilled player, keep track of what cards remain to be played.
Later the Roman Numerals are added to the Trumps, which makes it more playable for those not literate in Hebrew. Yet the tradition of Hebrew Alphabet Artwork remains too, as late as 1835, as can be seen in the Dotti deck.
Gypsies could have spread both playing cards and Tarot cards as dual-use devices: fortune telling and setting up curse-removal scams by the women, gambling by the men. There is much contact between the Gypsy underworld and the Jewish underworld: it is not a coincidence that both Yiddish and Romany have contributed many words to the language of petty crime & gambling & that both populations in Diaspora have survived through itinerant peddling.
I offer this as a reminder that sometimes: an alphabet is just that, an alphabet. The Hebrew alphabet was and is used by living people going about just living their lives. It isn't always Cabala--in fact, most of the time, it isn't. Tarot as a game has a legitimate place in the history of Jewish household life and pasttimes.