Hello,
I found your project very interesting, i´ve got the skills to create the video you are looking for.
I´ll tell you why, i am a 3D artist, focused in animation, but i am very technically skilled, i can already imagine a way of reproducing the result you are looking for.
I´d like to propose you the following, i can create a 3D preview (wireframe and simple shaded) of the animation, you just need to give me a feedback and tell me what is it that you didn´t like in the first vídeo, and what is the key point that you are looking for in the next vídeo.
Also, if possible, can you describe how many seconds of animation you´ll need?
I´m looking forward to hearing from you,
Sander.