I was a patron for quite a while. I left Patreon for a number of reasons but I quite supporting MITY due to delays in the release schedule before that.
On the topic of mini-games: I don't mind the mini-games, but they should add something to the game instead of just being a road block or a brick wall to beat your head against for gold (why you wouldn't use cheats for money I have no idea). The Crab mini-game was pretty shit and I couldn't stand it. The fighting mini-games in book 1, 2, and 3 are fine IMO. The coin sorting game runs like shit but is otherwise fine. The probending mini-game is too easy once you just associate the words with the number on the keyboard, so it's pretty neutral however I'm glad we don't need to do it THAT often. Overall I'm glad there are mini-games as they make it not just a "click button, receive porn" style of interaction, but they also seem to not really add much fun.
to me, the mini games should be there as a complement, not the main dish. and the combat was already good enough in the first book, all they needed to do was build upon it. instead, they kept reinventing the wheel, and it just became an exercise in futility, as it had no effect in any other book.
as a side note, since each book is a completely separate story, with not real(IE. gameplay) connection with one another, they could just released each as a separate game.
but, since they are all in one, i think they should keep things, and add, more stuff, like equips, and abilities that would transfer after each book. maybe, have specific abilities that are slave/love route only, nothing major, just 1 or 2, on each. something to entice players to want to replay the game to collect all abilities if they wanted to.
it is a game, its a porn game, sure, but there's no reason why it couldnt be fun to play along side being fun to fap to.