Agreed. You want vanila, go eat a d**k and be sad in the corner. The only content you'll get, is some kissing and handholding. You want NTR, then your welcome here. Although, I have no idea what is there in the NTR rout because I don't play it, but it would be better to focus on one thing other than trying to please both parties.
I still couldn't figure what is the main course of the plot. The only idea that pops in my head is that, the Dev wanted to make an NTR game, default plot, you go around and see how your close ones are getting owned. Typical for cucks. Then he added harem to try and "seduce" the vanilla enjoyers.