First of all, love the game and thanks for recommending Big Aspirations, loved that one too.
I think I have pretty much played everything by now, so I wanted to make some suggestions if you are interested. Totally fine if any of the ideas I write here are not up your alley.
Quality of life changes:
-The "Skip Day"-option could be changed to "Manage paperwork", removing the need to pay money (I don't know if there was a specific reason for the payment of course).
-The Garden doesn't really need to have those wait times for food, all it does is stretch out playtime. Maybe they have a storage where you can buy the food from.
-When taking requests, the encounters are random, which can be a bit tedious at times. Maybe after collecting clients, there could be a list of requests that the player can choose from. It could look like this:
Check requests
>Nelly
>Layla
>Maddy
Personal wishes (Now this gonna be a lot more work, but I could provide the text if you want, since writing isn't really something you like doing):
-Add a level 4 stage to the Teller, right now she can only get food three times for every route. Also the initial girl where you learn about enhancements.
-Implement the choice of a route and name for the protagonist into the game itself, since these choices are sort of awkwardly stapled to the front. 1:Have the Application Lady hand you the form and sign it (here's where you enter a name). 2: When talking to Katherine for the first time, have her ask what sort of enhancement you like most so far (here's where you choose what she'll go for)
-I'd personally be interested into why Katherine chose her enhancements. Maybe she could get a dialogue option where you ask her about it and she'll tell you her stoy (even if you technically make the choice, but that can be implemented into the text)
-most of the clients only get two enhancements, except for Vicky from the nightclub. Maybe you could have an option for them to come back when you visit them after their initial enhancements.
-Some of the clients barely react to their enhancements. I think it could be more fun if some of them could get text like "oh wow, I feel so heavy and soft" or "damn, look at these muscles bulge". Also a bit more interaction when revisiting them (maybe a "visit X"- option when going to the city).
-The garden having every type of food available at once, so you freely modify Macky and the Teller.
-Option to talk with the application lady again, maybe even gain her as a potential candidate to be enhanced.
-Maybe after getting on Katherines promotion level, you could apply for a teaching position, rewarding you with a newby that takes after your enhancements.
That's all I have to say for now. As I mentioned, if you need help with the writing, I would be happy to help with that for free if you want.