One of the weakest points of LT, in my opinion, is the lack of normal arousal mechanics. I believe that if you have a porn game with sex mechanics, the game should push towards these mechanics, giving the player a choice: accept or resist, but not let them completely ignore it. Gradually growing over time (Or as a result of what you saw/heard/dreamed, etc.) arousal prompts you to look for a way either to satisfy it, or to restrain its growth and not get arousal. Both ways should, in a good way, also reward and punish the player with something: buffs/debuffs, the appearance/removal of options in dialogues, etc. And in LT, arousal is, consider it, a static parameter based solely on the corruption of the character. You can complete the game without ever having sex or, conversely, fucking with everyone you meet - and you won't feel any difference. This is very sad.
Fetishes are also static and change, literally, at the click of a button on the player's phone. Moreover, they practically have no effect on sex scenes. You can make your character hate masturbation and vuaerism, and then peek on someone by putting your hand in your pants. These functions will still be active, the character will not refuse to do this or at least receive stress from dislike for himself and own actions.
Honestly, I would have gone somewhere in TiTS and never returned if it weren't for the fantastic customization possibilities and, most importantly, random and customizable enemies. Beating up the same ants that are all women and the same jaguars that are all men quickly gets boring. Give me that centaur over there, which is a brutal man on top and a fertile mare on the bottom, that Amazon shark with tits the size of a watermelon and a dick the size of my arm, that cute harpy chick over there... I do not know, my eyes are running away! Not these completely identical in shape, size, gender, height, weight and even preferences jaguars!