I think one of the reasons the Devs didn't want to add a 3D object in the first place is because of the inevitable posts like this, asking for more 3D specific features.
I wouldn't mind seeing the 3D object having support for embedded textures (like DirectX .x models) and support for animation, but I don't think we can expect the Devs to look beyond that for a 2D game engine.
Krush.