s93 just wanted to suggest not making it a choice between a "virtuous" route that's mostly vanilla and a "sinful" route, with all the kinks happening on the second one, along with what one might consider a bad ending (passive cuck MC, breakup, public use LI, etc...). It would be refreshing to see a game where a bolder, dominant MC is getting cucked, where cheating may happen, but the MC doesn't react with self-doubt and instead plays cool and asserts control afterwards. A one-time cheating LI that is impressed by the MC's reaction isn't common, people who dislike cheating usually vote for revenge and people who enjoy it normally prefer a full cuckoldry arc. But you hardly ever see a cucked character turn the tables and do it in an assertive, rather than violent way. And the MC could, in turn, acknowledge he likes his LI being a slut, without coming off as a beta wanker, and agree to give her free reign. Maybe they can manipulate some uncle, or anyone who would think to manipulate them. Anything, really, that makes the MC come off as better than a weak doofus, or a passive cuck.
Surely others will disagree, I'm not suggesting this should be the only route, just that it would be worth exploring an alternative to the clean alpha/beta stereotypes. Maybe a "middle-way", if other considerations lead you to decide for clean routes as a way to reach a wider audience.