vingrjoe
Landlocked Shipwright
If CivIV is going to use actual 3D models ingame as opposed to animations, unit creators here who build their units in a 3D program and animate them may have a chance. If Civ IV's engine will be similar to any of the 3D RTS games out there now, it will be where the game will use the 3D model and have pyrotechnic-particle effects assigned to the different actions ex: moving, firing guns, exploding. Command and Conquer Generals does this. There is a whole library of particle effects that are assigned to the model's different actions. The model has pivot points for any parts that traverse or rotate and it also has bones assigned to it where the particle effects will be applied.