There are only a few devs I have supported but being on this site for a couple of years now, I have observed that the more detailed and carefully made games such as this, Battle for Luvia, Noemi's Toscana Rebirth, or some of the higher quality Japanese VNs are not liked by a majority of people because, in order to appreciate the depth of game design, you need to actually play the game. If you're just hunting for sex scenes during your playtime, you're missing the point of the games that develop characters.
Noemi's: female protagonist. Many male players don't even try to play. In addition, WalkThrough has 76 pages. Games that need 76 pages to explain each step in the game are rarely popular.
Battle for Luvia: WT mandatory too. Unity.
Japanese VN are generally censored and without animations. Some with 30-50 hours of gameplay. With 10-20 sex images. Some with tentacles, rape and other unpopular fetishes.
Nothing against you enjoying this type of game, but it is your personal preference and that of a smaller group of people.
I usually play two games with full WT: The Twist and SOB. Average story, but a lot of porn.
Here at Frosh Life you need to follow WT all the time, so you don't miss an event. Long minigames for little sexual reward. 18 year old players may like long minigames, but perhaps 40 year olds players prefer skip minigame games in adult games.
Now it is DEV's option to please all players. Or to a small group of players who want to play minigames and full WT game.
Sandbox games need in game hints (- go to the gym/beach/university day X / hour Y). Without WT being necessary.
Skip minigame is good for attracting more players as well.
In my opinion, this game would be more popular if it were a visual novel. MC automatically moving to events.
Sandbox work when you choose what to do and when to do it (with hint system). But if you need to follow a schedule of defined events it doesn't make much sense.