The problem is that the game, as it is currently, does not shy away from depictions of sexuality. Specifically it sexualizes almost all depictions of women, while men are consistently shown as strong, powerful, competent and appropriately dressed for adventuring. Sexualized images that depict males as passive objects of gaze with a sensual come-hither look or pose are incredibly rare. What you see instead (though much less often) are male power fantasies, where some muscles might be showing, but it is clear that he is not being depicted as an inappropriately sexualized object. A great many female 'adventurers' definitely are.
And let's not even talk about comic books.
When I say inappropriately, I mean is is very stupid to go dungeoneering in lingerie. Victoria's Secret is not that it grants a +5 to AC.
I agree that it would be reasonably okay just not to have any explicit sexual depictions in the game of anyone's orientation, but that just isn't how it actually is right now, by a very long shot. The basic theme of 'women have to be sexed up for male gaze' is so pervasive in fantasy art and literature as to be an unthinking default and essentially invisible. It is a deep salt sea that the average fish doesn't even know he's swimming in. Unless of course you aren't a fish, and you're choking and drowning in the stuff. The fish don't care. They honestly don't even know why you have a problem. The ocean is invisible to them. It is simply a comfortable and natural environment. For them, not for you, but it's going to be natively difficult for a fish to understand why an environment that works seamlessly and effortlessly for them is oppressive to you.
The only time it really becomes visible is if the comfortable status quo is threatened. The people who are used to having it 100% their own way, the ones who feel entitled to have it 100% their way because that's how it always has been, start screaming at the very idea of losing even a tiny piece of that privilege. Not cool, yo. Seriously not cool.
The direction of sexualized gaze in fantasy art and literature is overwhelmingly heterosexual male. That's the standard. Everything feels natural and works great for your eyes if you are that gender and orientation. The fact that it can feel horribly unnatural, weird, unpleasant, oppressive, No Fun, like you are being excluded or targeted, or even scary or threatening, is unlikely to occur to someone who has never been made to feel that way by the default direction of sexualized gaze in their hobby.
I do like your thinking about presenting same gender consorts in a completely ordinary, non dramatic, non explicit way. As for strong, healthy, non-sexualized female models not promoting female equality in the real world, seriously, why shouldn't it? Everyone is entitled to grow up with stories about characters like themselves being the heroes, whether they are male or female or trans, black or white, gay or straight. And I do hope they are good inspirational stories, even if they are only fiction.