I like Gwen more than I thought I would, but I think she needs to go further into the fourth wall stuff. ATM its mainly just cute quick jokes in her intro, rather than an actual gameplay mechanic of any kind.
For example, the idea that she's actually talking/"fucking" YOU the player who is sitting in front of a computer, and not the avatar player in the game is a pretty good one. Imagine if you asked to massage her and she just told you what her massage code was lol. But then idk if that would be very "sexy".
More so, I wish she could manipulate the game herself. The scene of her "rolling back" her bad first impression is pretty great, so more of that kinda stuff would be interesting. Maybe she chooses positions ocassionaly despite your choice. Maybe she manipulates her own stats- it's taking too long to cum so she just keeps maxing out her meter, or she feels kinky so she maxes her submission meter for one round.
Obviously this is waaaaaaaaaaaaaay too much to ask of Oni, but atm I feel like after Gwen's intro, she just kinda blends into the cast as a lesser version of Kitty. I'm a little worried Scarlet Witch (esp the goth evo version) is just gonna be a lesser version of Rogue with a touch of Jeanie bitchiness, not unique enough to justify a whole new girl rather than refining the ones that already exist.