Ward Destruction Animation

Why don't we have different animations/models for each "level" of ward health? If it's been hit once it's got some cracks, twice and one of the wings is falling off, and three times, well, its dead. Pink wards can have more levels of detail, of course.
In a lot of the recent Face Off fanart, the wards are depicted as cracked, so that and the tower destruction on Howling Abyss gave me the idea.