It was challenging because I'm not very good with rigged 3d people, I had to exaggerate the proportions of her to match the style of characters in the Duke 3d game, and getting the lighting to somewhat match was a real pain. But once I get everything to an acceptable level I can pump out variants real quickly like the enemy sprites I made earlier. I did make the girl a little higher in resolution compared to usual enemies sprites so they can look nicer in game. I'm assuming you can just scale them down if you use them in a mod?
Another idea I had with this 3d girl is maybe a mod where you can free the babes. It's a little challenging since the resolution of static babes and moving sprites are quite different, but here's a sample I was working on:
NSFW
Above is the girl getting captured. Not sure if there's ever a use for this. Maybe a cutscene?
Below is the girl being rescued. If you all like this and can use it, I can continue an make freeing animations of the other slime babes.
Let me know you think.