Eh, I think having a few more netorase partners might be cool in the later updates. None of them have to be as defined a character as terrace, or even have any separate sprite, they can be some strangers in a club or on a beach. It is just, more variety is better in netorase games and having only one constant netorase partner can start feeling stale and even NTRish. It should start with terrace, but at least for exhibitionism or some related activities I would like more audience, than just terrace. Though ,obviously, if Torimiata is not planning for any more guys or feels like like their addition can spread the game too thin, then it is better to follow the initial plan and focus on just mc, ayumi, terrace and ari . I trust the dev on this matter.