I understand where you are coming from. Of course, in real life, even if you are dominant, things frequently don't work your way. But it's a game we are talking about here, it's supposed to be unrealistic, and it should bring the players what they like to see.
It's for sure very logical that, while you are facing bigger monsters like Max, Malcom, or the UFL guys in Garette's route, you don't have much of a saying other than being treated like a bi*ch. But in these cases, the completeness of the storyline is prioritized over players' personal preference, especially that of dom players. I only speak for myself here, but I hardly find any joy in being submissive, not mentioning being subjected to it.
This is not saying that your game is poorly designed, no. Your game is great, but it very much caters toward sub / bottom players. Having a dominant role in the game is kinda pointless... considering that neither of the two love interests allow the player to top / dominate them in any way. The only exceptions are Dalton's two endings, but those are not repeatable, not mentioning to achieve those endings, dom players have to go through a lot of content they don't really like and also cannot avoid. As for Garrette, if I recall corectly, he out right become the player's master upon reaching his endings, which I'm fairly sure is a hard no for any dom player.
This is precisely why I agree with what Chellay said and, as you have mentioned yourself, that many devs are not aware of the fact players do take these position thingys seriously, so it is better to let players know what they can expect, instead of having an angy guy like me ranting about it later. I'm glad to hear that you want to balance it more when writing about Ursus and the content afterwards tho.
I'd suggest you make something like a character profile in game that documents the characters the player have met and give the player an option / warning that saying these profiles can give potential spoilers about the character's content, so they can choose for themselves whether they want to see it or not. Also, like Chellay suggested, perhaps highlight in your game intro that, currently, the game is more bottom content-oriented, but more top content will be added later.