I like gradual progression, especially if it's a incest game. Keep me teased/aroused, and I have no problem if it takes a while getting there. What I dislike are fillers, i.e. dream sequences and similars
the description seems to match Rising Bliss, as already mentioned, which is a great game imo. Too bad that the ending was incredibly rushed, as the dev was apparently treated by some a**holes for some reason I am not aware of.
Euphoria and Maggot Bait, the latter possibly more than the former. I also agree that Dead Aegis made me sad more than aroused, even if a couple of scenes were good. Oh, also the (abandoned) Maim Lain games.
False Hero started as amazing game, I was a huge fam of the dynamic between the Melanie and her daughter, and I still go back to the 'teaching' scene when a need a...quick release (TMI, I realize). I even subscribed to it for a while.
Damn, I just discovered from this post that Midlife Crisis was (allegedly) abbandoned...shame! I also loved My Sweet Neighbour and the original The Personal Assistant (which BH sort of picked up).