No OP, don't get low salt low sugar beans. Instead you need to make them yourself with organic beans you grew, dried, soaked and cooked yourself, home-grown heritage tomatoes and unicorn tears for natural sweetness.
Of course it's not a meal to be eaten every day, but nor is anything. If you ate grilled chicken, wilted spinach and sweet potato mash everyday that wouldn't be 'healthy' either.
We need variety in our diets so we get a range of vitamins and minerals. We are lucky that we are able to have more variety in our diets than previous generations, though I'm not sure that necessarily translates into more vitamins as a lot of fruits and vegetables will travel further and be stored longer, which can deplete vitamin content.
I also get frustrated with the idea that there is such a thing as a healthy diet. What is healthy for one person might not be for another. Even taking out food allergies and intolerances, different people have different needs. A diabetic will need to restrict carbohydrates, whilst someone who is very active (including most children) will generally need to eat plenty of carbs. Most people should try not to eat too much fat (but we do need fat in our diets for certain vitamins and minerals, and I believe we need more fat than Slimming World etc say) but those who are underweight do need a larger amount of fat in their diet. The truth for Mr or Mrs Average falls somewhere in the middle.
My DS is underweight (0.4th centile for weight yet between 25th and 50th for height) and we got referred to a dietitian. The list of foods we were advised to give him would make most people faint! Extra butter in mashed potato, full fat milk with extra milk powder, lots of crisps, cakes (good protein in that from the eggs), sausage rolls and just fortifying anything we can with more cheese, butter or cream. That, plus veg, carb and protein is what makes up a healthy diet for him.
So many people tut at the idea of letting children eat sausages, pizza or baked beans yet boast how 'healthy' their children are because they eat six pieces of fruit a day or drink a huge smoothie.