More fluid/natural animations for mobs (no joints)

Minecraft mobs almost all have very stiff, boring animations:

• When walking, they move their legs/arms back and forth robotically (or just legs, in the case of zombies).
• When attacking the most they do is jankily move both arms upwards a little bit for a moment, or do that flick with one arm that players do when attacking.
• When they get hit, they just turn red for a second and robotically move their arms and legs a little.
• When they die, they turn red and slowly fall over onto their left side and poof into dust.

Some might argue there's nothing more to be done, because it would be against the game's established artstyle to add more joints for flexible movement.

But have you seen the mobs in the gameplay footage and trailers for Minecraft Dungeons?:

[links removed by admin]

Look how the mobs move around, and attack, and flinch when hit, and flop over when they die (or in the case of skeletons, fall apart into pieces). Look at that body movement on even cows, and look how the iron golem at 1:05 in the second video attacks.

There's so much more personality in all of it, and the mobs still have their minecrafty jointless, unbending limbs.

Mojang should update all mobs animations to be like this (even outright copy it), and keep this kind of standard for any new mobs added. If this affects performance, a graphics option to return mobs to their old animation can be added.