Keeps 5 days refrigerated and freezes 6 months — one of the best freezer meals there is, and genuinely better after a day or two. It thickens as it sits; loosen with water or broth when reheating.
Usually it needs salt and acid, not more spice. A squeeze of lime or splash of vinegar at the end lifts the whole pot. Under-bloomed spices are the other common cause.
It's a genuine argument — Texas purists hold that chilli con carne means meat and no beans. Practically, bean chilli is its own well-established dish.
Simmer uncovered longer, mash some beans against the pot, or add a tablespoon of masa harina or cornmeal, which is the traditional method.