How bout we give the Dev time to actually create the game? It's a .3 story based game with promises of fun stuff coming later. I don't see you complaining or leaving negative reviews on games like Lewd Island or Dating My Daughter.
Dev can take all the time he wants. I like what he's doing, and he's got a ton of fans. We're merely offering suggestions.
Those others games you mentioned are pretty clear about their fetishes, incest being primary. They also have a focused, smaller list of characters and do the teasing much much better. With deluca, the dev's likely going to pull one of those 'was actually your family all along' twists at the very end, but it won't matter by then.