You really need to do yourself a favor Miniforge and follow some of the advice in this thread, your posting updates yet seem to be paying zero attention to the people who are actively trying to give you genuine advice in order to both improve your products and not end up funding a butch of miniatures that won't be producible "if" this funds. Also just to back up what everyone is telling you here, that as a sculptor myself both large scale and miniatures I can safely tell you that those miniatures need serious alterations in order to be cast-able, not even mentioning the anatomical issues that need fixing on top of that.
So in order to be helpful here's my personal advice for both you and your sculptor:
1 - Get your sculptor to buy some amazon miniatures similar to yours, study the size and formation of the details, undercuts, how the miniatures break down into multiple parts, what level of detail is
even possible on such a small scale. Actively tell your sculptor to put a ruler next to the miniature and study how big the face, a hand, jewelry or an eye socket really is in miniature scale, it may help them
better understand the space they have to work with since by the looks of it your sculptor just doesn't understand the scale at all.
2 - Get your sculptor to study other 3D miniature artist's work, learn from them, look what they did right and how your work compares, apply changes as necessary. Here's two great if not two of
the best in the miniature industry:
http://hazardousarts.deviantart.com/ and
http://hecm.deviantart.com/ you can learn alot just by looking at their work.
3 - Get your sculptor to double check and re-study the anatomy on these figures before he/she commits to the details, having the basic shapes, forms and muscle groups in place
is 80% of any anatomical work you do, details and refining is always secondary, your sculptor seems to be skipping this. You don't have to be a grandest artist ever to understand anatomy, you just
have to take your time and make good use of references.
4 - Your figures currently have ugly anatomy as a result of poor anatomical choices, if the intention of your project is to sell sexy boobie lady's for nerds to buy (as your title suggest) then having decent
well sculpted and attractive feminine forms should be your top priority, not just big titties (you add those later), currently your miniatures fail at the very thing their being made for, think about that for
a little while and plan how to improve it.
5 - Go and look at Raging Heros and Kingdom Deaths work, tons of attractive female miniatures, get inspired and get cracking on improving your stuff.
Hope that helps.