Antonyms for the phrase "most bare-bones" would include complex, ornate, rich, intricate, elaborate, detailed, decorated, and embellished. These words suggest something that is not minimalist, but rather full of intricate details and decorations. For instance, a richly ornamented mansion with intricate details and decorations would be the opposite of a bare-bones design. An elaborate meal, adorned with intricate garnishes, would be an antonym for a basic and simple meal. In conclusion, antonyms for the phrase "most bare-bones" would be words that connote richness, complexity, and ornamentation.