Carlos, that is a great idea. When I have vegetarian sims, I usually make them cook so that they won't end up eating a non-vegetarian meal. It would be great is household members got the ability to prepare vegetarian meals, even if only a select few, when a vegetarian is on the lot. It would be more realistic that way.
I would like for Sims to get sick (colds, flu, allergies, etc.) so that they can make use of the hospital. And for pregnant sims to be able to pay a fee at the hospital to determine baby's gender. Basically, I want the hospitals to be more useful, other than getting a job and therapy for a midlife crisis.