I'd love Star Guardian Taric as well (I've mained him since the rework), but there is a reason he doesn't have one. The Star Guardian skins are based on shoujo anime and manga (a la Sailor Moon and Puella Magi Madoka Magica) which have a central theme of femininity and the power of women. Although a Tuxedo Mask skin for a male would be really cool, Tuxedo Mask is not the most interesting character in Sailor Moon by a long shot. Even shows like Claymore (another magical girl anime, but this one much darker and mature) outright rejects having men be the titular Claymores because they go mad with power (a little sexist but hey what can you do).
The Star Guardian site even goes full anime, with 'stats' like charisma and intelligence, along with bloodtype and generic anime quotes at the bottom. Even though Taric has a star theme, he is far too masculine to fit in with the Star Guardian line without throwing the whole vibe off. The trope for these all-girl magical teams is just that: All girls. And trust me, I'd be the first on that SG Taric train but I recognize he doesn't fit the aesthetic at all. I mean, you've got these ethereal, fae women next to a huge buff guy? Not very appealing. But as a gay man, I've got my Pool Party Taric so I'm satisfied.