I will take this as a prime excuse to play your game as well! I had seen it pop up a few times, but I like going to the dredges of the games that need help to get everyone ratings.
I love that you say the core gameplay is the most average part, when other comments say that they like the spinning on the chair part the most. Or did you mean the loop of "Spin on chair" to "Minigame" because I kind of agree that that is the least smooth bit. A spin off (get it) I was thinking about is just taking the coffee minigame and turning it into more of a barista game with a company management sim kind of beat.
Anyway I am rambling. Thank you for the valuable feedback!