This is one of the best lewd games that I have ever played, hands down. I only have a handful of grievances, a few minor and one major:
1. I wish the dolls were more interactive. More toys like egg vibrators and paddles, the option to slap their butts or boobs, a few BDSM poses and gear such as handcuffs and gags, etc. A wider variety of charge animations like a titjob would be great, too. This is a minor thing, really. I'd see it more like a bonus to an already great game.
2. It would be nice if you could adjust butts in the same way you can change boobs to make your dolls even more unique. Maybe have multiple options like hips, thighs, and butt. Also, tails to go along with the ears would be nice. Again, this is less of a grievance and more of a minor wish list thing.
3. It would also be nice if we could see our customization colors on each map. The color filters are cool, but I wish I could toggle them off specifically for my dolls so that I can see the colors that they are supposed to be.
4. Finally, this is the major issue. I really, really wish there was some sort of weapon progression system which would allow you to eventually lock in the weapon of your choice. Maybe tied to the max rank version of their corresponding cards? Random weapons were fun at first, but by late game, I had my dolls tailored to very specific roles such as Ball Hunter, Goal Hunter, Floor Hunter, and Guardian. The only thing holding them back was not being able to choose a weapon that would suit their role. There are some really fun weapons in this game, and it is a shame that I barely get the chance to use them due to RNG.
Sorry for the wall of text, but I just wanted to get my thoughts out there.