I actually added swallowing to Digital I's T-Rex expansion. Chewing is actually a semi circular motion, which is tough to do, morph wise. Ypu would actually need a number of specific morphs to accomplish it.

For a figure that has a separate lower jaw body part, it might be easier, but then ther are also MANY different types of chewing.. tough chewing, mild chewing, ect. You have to add a ton of morphs to a figure to accomplish they many tyes, and the odds are, it would hardly ever be used.

Way too many people take way too many things way too seriously.