Many of the older character models weren't made by him and were taken from the jp character card uploader for honey select. This may be why character models can either be a hit or miss. I think the models look good enough, and there have been some minor improvements such as switching to a better skin texture for the models. I think what would be cool is a remake of the early content because the early renders use mostly default honey select lighting and it looks like shit.
On the note of skin shine, this is actually an option called "skin shine" slider when working with honey select lmao. The reason they look shiny is because Mr.C wanted them to be.
Here's a couple of the cards I could find after a small search. I'm sure you'll recognize them. Basically these pictures are the character model themselves, and can be loaded into honey select. So yeah, a large portion of the early characters weren't even made or modified by Mr. C lol. But considering the number of characters, I think it's unrealistic to make characters from scratch, so I'd say it's fine.