Can forgive the Creep because the Fantasy world itself has plenty of Creeps
I agree with you that the Girls feel like they need different voices and slightly altered dialogue scripts because they kind of all go Ahegao and Fanservice mode every few Minutes. This Protagonist is living the dream life of Harem Stud despite his dry wit.
You can kind of make decisions and alter who you do it with outside of the main cast, there are several side chicks and if you want the Parental Responsibility Implications the Guild Tavern's lonely Milf beats out the others in endurance.
Melfa is the one you choose for the Super Freak Mode. MC seems to be a douche or prick but you can shape his charming personality when the choice prompts let you
(Barring Supporter Exclusive Scenes)
You know what really happened to be my pet peeve? The fact they are all virgins and yet not a single drop of Cherry popped blood is shown yet there are several bloody moments and a John Wick Joke or two and a Stabbed Dick
(No Seriously Choose Kill Rod Option)
You get to see some Chaotic Good in the MC.