Actually ED products and 3rd parties modules has a "basic" Damage system on add-ons module (The planes / helos / vehicles and ships, can be destroyed on some pre-defined zones), and only can reach some level of damaged / destroyed detail, but not more (DCS:W has no dynamic destructive models or disintegration models implemented).
The actualy DM working by "Cells" with the develop assign the destructible regions of a module. The develop can add "detachable" parts or your module is some cells has been destroyed.
The destroyer model on every 3D model has actually always the same. (someone correct me if that is wrong)
ED actually work has centred on improve and add new system functionality, and expected on the future (Hope to) can improve the damage model and crash animation on some level of details, but not has any info of that level of improvement or dates about when can coming.
