Hi @crabtree333 & @NotiriousHDP,
Thanks for reaching out. This is not the experience we want you to have. The New 3D feature uses complex effects like materials, ray tracing, etc., which limits its expanding & editing capabilities outside the 3D & Materials panel.
However, we have tried to provide as much customization as possible under the "3D and material" panel > properties & Lightning section.
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Here are three outcomes of expanding new 3D objects:
- Expand appearance to get a Raster image

- Redner as a vector under 3D & Material render settings, then expand appearance, but the output would be a non-editable vector. But it will be more suitable for printing or scaling objects than a raster image.
- Expand as wireframes from 3D & Materials panel > Object > Expand as Wireframes.
Please feel free to reach out if you run into any other queries. We'd be happy to help.
Thanks,
Anshul Saini