i need to add more characters with the 'extreme' traits like multibreast/hyper futa/centaur/etc so we can narrow down whether someone likes the design/hair color/whatever or likes that Indigo's mom has the
most breasts or Elena has the biggest dick, haha
I'll give you a more in-depth opinionpost, then.
So, she (catmom) doesn't have bolted-on bimbo tits that might be something you'd go for in a hyper-sexual character, but her believable design makes her appealing despite being unusual and having some 'less desirable' traits. It's also just a bit exotic anyway. It's also the same thing with certain characters like Kali where some people may have some appeal to "I fucked this cute character's mom (who apparently doesn't get it on very often)". ... And also, glue-like cum / unusual / extreme cum feels like something that's worth exploring, since you can get away with unusual or filthy concepts just because people are usually okay with cum in their sex games.
I wouldn't be surprised if she's a "You like her or don't like her" character, but if you do give her more content it would be nice to see her taking some different roles/positions, inviting to her house or interactions with her daughter given you just fucked her mom.
Now that I'm done shamelessly pestering you for more catmom content, I'll just briefly point out a few things I liked (forgive me, it's been a while and I can't remember any names) -- The classmate who keeps pestering you for a bigger bust has some interesting expressions which is a good contrast to a lot of the characters having much more gentle expressions. Indeed, the centaur is a lot more extreme than the other characters which, in my case, I like. I'm not so much into some of the shy characters without a lot of sexual assets but the interactions with them are usually pretty cute; if you weren't already planning on it you could think about more content with changing characters to be smaller/bigger in areas using potions and some possibly personality changes to fit. What the game has over most other VN sorts of games is that you have those potions to change up characters, so remembering to put work into that aspect might be tiring if you have to write a lot more content for each different state a character can be in but it could be very rewarding.
Those are just my opinions, I'm sure if you keep working hard there'll be more good content regardless!