I'm wondering if Hyaou would invest in the characters romantic routes like Hayden, Korg or the Bull guy also kdk if he's going to create romantic routes with some characters like Feliar, Gunnar or even that Big Grandpha knight
everyone you named will get a romance route lol, it's just he's working on them at different times and can't add something every update for every character because it's WAY too many characters atm and he has the main story/main side stories to work on as well.
also, Ste and Hayden are guest writer characters so Hyao can't add them in on his own, he needs the original writers for them to do it.