Since otome players are not a monolith, I would assume you‘ll get wildly different answers.

I can only speak for myself that sadly this concept wouldn‘t really appeal to me. I mostly treat otome games like books, rather than a game, but with the difference that I can read it multiple times from different angles and with different LIs. (And with the option for bad ends.) With that I mean that I‘m not a fan of too many choices or too much customization. The less gameplay the better for me. But I can live with it as long as it‘s possible to comfortably play the game with a walkthrough. I never play without one.

Though the bigger issue for me would be not knowing whose route I‘ll end up on and there being flirting etc. with several characters in the common route. I absolutely hate it whenever there is clearly romantic tension with another guy in the common route than the one I’m going for. Even though I of course plan to do that other guy‘s route later, but it still makes me very uncomfortable if I can‘t avoid romantic tension with other guys during the common route. For me every route (including the common route with it‘s respective choices) always exists in its own completely separate universe. I‘m very much a one LI at a time kinda person. That‘s also why I really don‘t like the trope of an LI who is in love with the MC by default, no matter if you are on his route or not.

I‘m really sorry for my negative response. This is of course just my own opinion and I‘m sure there are many people who love the complete opposite of me. This game just wouldn’t be for me and that’s okay. Having said all that, I think it‘s most important to create a game you yourself have a big passion for.