Thanks to everyone for the opinions! You have mentioned a lot of things, and I mostly agree with you. Unfortunately I thought of the minigame as a little side thing to add some stuffing content, so the current structure is VERY limited and I can’t really implement a lot of the things you said (more interactions, animations etc.).
Now, it could be changed. I could even use the new match-3 minigame I’m developing for Voluptuous Elves but I prefer not to recycle it completely (in the other game it will be a cooking and not a stuffing minigame but it could definitely be adapted).
So I’m sorry it it’s not going to be a good minigame or anything here. What I think I will do is just remove a couple of stuffing stages from Maki (yeah she gets way too big
) and add more dialogue between the stages. I could even remove the buttons entirely and make it a normal talked scene, I didn’t do that from the start because I thought it would be too repetitive to write four different stuffing scenes. I can add more sounds, but that is something I should do in general.
Anyway I think all of your other suggestions were absolutely great!
Assuming LI stands for love interest, well, each girl is going to have six stages. Two of them have already reached that point, so that’s it for this game while the future expansions will add new stages. I don’t know if you’ve played the game or not (if you did through other means that’s fine too) but they get quite fat for a kind-of-realistic setting. If you’re going by the last illustration on Patreon that’s the stage 3 though, so those two are way bigger now!
The “harem route” could add more stages, who knows 
That said, out of fairness I tell you that last week I worked entirely on Volputuous Elves so the next thing to come out is most likely going to be the new version of that. I think it’s right to move that project forward as well after I released that short demo in June, and a lot of people subbed to the Elite tier. After that I’ll be back working on the Azumi update, of course.
As usual I’m asking for your patience, I work on these projects hours every day (as is only right since I charge for them) and I’m doing my best even though I know there are a lot of flaws 
Please take a look at the other thread as well, I will release more details soon!