Fireball doesn't use model

The flying firecharge (blaze/ghast/dragon fireball) doesn't use a model at all even if one is specified, only using a particle. The model is used in hand/GUI/dropped/3rd person/item frames, but used a particle when launched by a dispenser/mob. All other launchable objects (snowball, egg, ender pearl, ender eye, splash potion) use their item models,

Attached is a debug pack that shows the issue.

Also related: there is currently no way to specify projectile models' rotation mode: currently they all act like particles (facing the player) rather than having the option to face based on velocity (like arrows) or origin (like wither skulls).