Except for insulin, are the other things the pancreas makes important?

Absolutely. The pancreas has a dual role as both an endocrine and exocrine organ. Aside from insulin, other pancreatic endocrine hormones like glucagon and somatostatin are responsible for controlling your body's blood sugar. The exocrine pancreas is vital in producing enzymes to help digest carbs, proteins, and fats in the intestine. Otherwise, you'd have severe malabsorption of nutrients.