Heh heh, I see this dilemma on a board game forum I frequent. They want LGBT representation in games but since it's basically just art we are talking about how exactly do you have a gay (or straight or trans) character when the only thing you really know about them is how they look in card art? Maybe you get a little lore quote in there somewhere but unless the art is super gay or shows a guy literally fucking a woman you can just superimpose your personal sexual preference on the art virtually at will.
Seems so silly to me but some folk really get worked up over it to the tune of a round of golf claps whenever they can point to a card character that some tweet says is a gay character.
It reminds be of that "Rescue Me" show that had a fireman calendar photoshoot scene. One of the more naive guys was talked into putting a yellow handkerchief in his back pocket as a sort of gay dogwhistle.