3D bullet models for ranged mobs

It would be a very cool idea to import 3D models for ranged mobs to shoot (Maybe even with a procedure when the bullet hits player/ground) for later versions of Mcreator. 

This could be very useful when people want to create Wither, Blaze, Stray or Ghast like mobs. I don't know if this would take alot of work, since I didn't take a deeper look

into actual minecraft coding, but I would appreciate it alot if this gets added!