Representations for Assembly is comfort thing.
But sometimes require similar tool in the Part.
For instance, when I create the spring, that sometimes spring in Assembly must be compressed, moreover in Drawing this spring must be not compressed. So I compel do change for dimensions munual. That very not comfort and can create error of user.
Besides spring's exist other Part's that have is deformed in Assembly (and accordingly at montage in reality), but Drawings of the Parts must be not deformed.
So, there was good, if this problem there was solve technical smarts.
This will save users from possible errors and reduce time manual work.