I do not care how "top of the line" your canned food is, it is not MEANT to be the sole diet of dogs long term. Really, is is a flavoring or top dressing to be mixed INTO kibble, or to add some additional protein.
It is not really balanced diet -since every can is 75 to 80% WATER. Your dog is not really getting enough good nutrition from it; unlike an equal amount of kibble OR going to an entirely RAW DIET.
Canned food (or a home cooked diet) also still COOKS OUT the majority of nutrients. I would ONLY employ such for a sick dog or weakened immune system or one with no teeth. However, most kibble can be soaked with warm water - into a gruel format - a dog even with little to no teeth can digest.
Raw diets are as close to a natural diet as we can provide to canines - who are designed BY NATURE as CARNIVORES, not omnivores and certainly NOT herbivores. Dogs on raw diets tend to be healthier, according to MY VET who graduated at the top of her class at Auburn Vet School.
Raw diets are not a TREAT and cannot be fed "periodically' with good outcomes. if you want to move to RAW; you can either transition over or go COLD TURKEY. Dogs need to develop a more acidic "gut' and so once they do, switching back & forth is not healthy or advised. Prepared raw diets are far more expensive than home-made (and those you carefully research & control the ingredients on) but many people are too lazy to do the reading & work necessary to make their own or do not WANT to "UNDERSTAND" what is involved, so you pay the price (of THE EASY WAY OUT) if you go that route.
All of my dogs became much HEALTHIER on raw. But then, my vet helped me find the right research & reading materials & made sure I formulated good diets for them with LOTS of variety.