When the game first started and came out, it stood out from others with its renders and animations. That's what the hype is still about. People who are still hyping this just don't see or want to see that this game is outdated various ways, because like discussed earlier in the thread, the start of the game is still pretty strong until we come to the content of last two updates. This game has also been inspirer to other devs in terms of setting a new bar for render quality back in the days.
These again are certainly pretty much personal opinions, because imo Saras story was just ridiculous. It started off well, but the ending was just purely stupid. Girl is afraid to get fucked, so what does she do before letting MC get her pussy? She gives him her asshole first! There are people in the world who won't let their ass be fucked even after 20 years of marriage, yet Sara is totally willing to let MC to take her anal virginity first instead of her actual virginity? Jeez... Lindas story and intentions was explained pretty well, or at least that's what I got from it. I totally agree on Caroline and Celia with you, especially Celias story was...well, again really stupid and the character is not attractive. But when it comes to the stories and plot in porn games, they are usually as bad as those are in porn movies. I myself can't really name any game, at least any incest game, that would have somewhat a good plot.
Story vise it's average yes, render and action vise it's still pretty good, even though as said earlier, now days it's outdated.