Yes, this game needs some better pacing, and character development, to justify where it goes.
But if you think about it the ideia is very good with great potential, the execution is bad sure, but maybe in the future with some work done....
I really like the idea of revenge NTR for the cheating wife, like "wife you fuck with my best friend? , I'll just fuck our daughter and my ex-wife and her daughter".
With good execution this could be a great revenge NTR turn into forbidden harem, see if the dev reworks the game and keeps the ideia.