Hi Dane,
Thank you for your interest in creating a new package!
If you are thinking of creating a brand new character based on your own 3D model you are free to do so. The PSD Exporter is only needed if you want to export already existing character images from the software but is not necessary for you to be able to create new characters.
We have lots of information on our Developer Guide here:
You can go through the video and download the Developer Package to get a better idea of how the program is structured and in what format you’ll need to provide the different layers for them to work.
Expressions and various poses are supported, and they can be defined in the Config Generator standalone application under separate “sets”. We have different hand positions in the Season #3 Throne Lady packages for example.
I’ll reach out to you by e-mail so we can discuss your ideas in more detail. It’ll be easier for both of us compared to doing so on the Forums. 🙂